diff --git a/src/d_dehacked.cpp b/src/d_dehacked.cpp
index dfa4f56f0..9e068b596 100644
--- a/src/d_dehacked.cpp
+++ b/src/d_dehacked.cpp
@@ -69,7 +69,7 @@
 #include "i_system.h"
 #include "doomerrors.h"
 #include "p_effect.h"
-#include "farchive.h"
+#include "serializer.h"
 #include "vmbuilder.h"
 
 // [SO] Just the way Randy said to do it :)
@@ -3198,8 +3198,8 @@ PClassActor *ADehackedPickup::DetermineType ()
 	return NULL;
 }
 
-void ADehackedPickup::Serialize(FArchive &arc)
+void ADehackedPickup::Serialize(FSerializer &arc)
 {
 	Super::Serialize(arc);
-	arc << droppedbymonster;
+	arc("droppedbymonster", droppedbymonster);
 }
diff --git a/src/d_dehacked.h b/src/d_dehacked.h
index 4418f4f09..e256718b6 100644
--- a/src/d_dehacked.h
+++ b/src/d_dehacked.h
@@ -48,7 +48,8 @@ public:
 	bool TryPickup (AActor *&toucher);
 	void PlayPickupSound (AActor *toucher);
 	void DoPickupSpecial (AActor *toucher);
-	void Serialize(FArchive &arc);
+	DECLARE_OLD_SERIAL
+	void Serialize(FSerializer &arc);
 private:
 	PClassActor *DetermineType ();
 	AInventory *RealPickup;
diff --git a/src/d_player.h b/src/d_player.h
index deec3f61d..989b28691 100644
--- a/src/d_player.h
+++ b/src/d_player.h
@@ -102,7 +102,8 @@ class APlayerPawn : public AActor
 	DECLARE_CLASS_WITH_META(APlayerPawn, AActor, PClassPlayerPawn)
 	HAS_OBJECT_POINTERS
 public:
-	virtual void Serialize(FArchive &arc);
+	DECLARE_OLD_SERIAL
+	virtual void Serialize(FSerializer &arc);
 
 	virtual void PostBeginPlay();
 	virtual void Tick();
diff --git a/src/dsectoreffect.cpp b/src/dsectoreffect.cpp
index ed8eb3327..78e00e6b0 100644
--- a/src/dsectoreffect.cpp
+++ b/src/dsectoreffect.cpp
@@ -28,7 +28,7 @@
 #include "p_3dmidtex.h"
 #include "r_data/r_interpolate.h"
 #include "statnums.h"
-#include "farchive.h"
+#include "serializer.h"
 #include "doomstat.h"
 
 IMPLEMENT_CLASS (DSectorEffect)
@@ -64,10 +64,10 @@ DSectorEffect::DSectorEffect (sector_t *sector)
 	m_Sector = sector;
 }
 
-void DSectorEffect::Serialize(FArchive &arc)
+void DSectorEffect::Serialize(FSerializer &arc)
 {
 	Super::Serialize (arc);
-	arc << m_Sector;
+	arc("sector", m_Sector);
 }
 
 IMPLEMENT_POINTY_CLASS (DMover)
@@ -90,10 +90,10 @@ void DMover::Destroy()
 	Super::Destroy();
 }
 
-void DMover::Serialize(FArchive &arc)
+void DMover::Serialize(FSerializer &arc)
 {
 	Super::Serialize (arc);
-	arc << interpolation;
+	arc("interpolation", interpolation);
 }
 
 void DMover::StopInterpolation(bool force)
diff --git a/src/dsectoreffect.h b/src/dsectoreffect.h
index 775bca9ac..6008cb63f 100644
--- a/src/dsectoreffect.h
+++ b/src/dsectoreffect.h
@@ -10,7 +10,8 @@ class DSectorEffect : public DThinker
 public:
 	DSectorEffect (sector_t *sector);
 
-	void Serialize(FArchive &arc);
+	DECLARE_OLD_SERIAL
+	void Serialize(FSerializer &arc);
 	void Destroy();
 
 	sector_t *GetSector() const { return m_Sector; }
@@ -32,7 +33,8 @@ protected:
 private:
 protected:
 	DMover ();
-	void Serialize(FArchive &arc);
+	DECLARE_OLD_SERIAL
+	void Serialize(FSerializer &arc);
 	void Destroy();
 };
 
diff --git a/src/g_heretic/a_hereticmisc.cpp b/src/g_heretic/a_hereticmisc.cpp
index 199b3f1c4..36969f6e7 100644
--- a/src/g_heretic/a_hereticmisc.cpp
+++ b/src/g_heretic/a_hereticmisc.cpp
@@ -14,7 +14,6 @@
 #include "templates.h"
 #include "r_data/r_translate.h"
 #include "doomstat.h"
-#include "farchive.h"
 #include "d_player.h"
 #include "a_morph.h"
 #include "p_spec.h"
diff --git a/src/g_heretic/a_hereticweaps.cpp b/src/g_heretic/a_hereticweaps.cpp
index dd6231288..34c77d316 100644
--- a/src/g_heretic/a_hereticweaps.cpp
+++ b/src/g_heretic/a_hereticweaps.cpp
@@ -1142,10 +1142,11 @@ class APhoenixRod : public AWeapon
 {
 	DECLARE_CLASS (APhoenixRod, AWeapon)
 public:
-	void Serialize(FArchive &arc)
+	DECLARE_OLD_SERIAL
+	void Serialize(FSerializer &arc)
 	{
 		Super::Serialize (arc);
-		arc << FlameCount;
+		arc("flamecount", FlameCount);
 	}
 	int FlameCount;		// for flamethrower duration
 };
diff --git a/src/g_hexen/a_clericholy.cpp b/src/g_hexen/a_clericholy.cpp
index 7c8e8f8e7..6a840edb5 100644
--- a/src/g_hexen/a_clericholy.cpp
+++ b/src/g_hexen/a_clericholy.cpp
@@ -31,10 +31,11 @@ class ACWeapWraithverge : public AClericWeapon
 {
 	DECLARE_CLASS (ACWeapWraithverge, AClericWeapon)
 public:
-	void Serialize(FArchive &arc)
+	DECLARE_OLD_SERIAL
+	void Serialize(FSerializer &arc)
 	{
 		Super::Serialize (arc);
-		arc << CHolyCount;
+		arc("cholycount", CHolyCount);
 	}
 	PalEntry GetBlend ()
 	{
diff --git a/src/g_hexen/a_magestaff.cpp b/src/g_hexen/a_magestaff.cpp
index 9ad303179..c05206d32 100644
--- a/src/g_hexen/a_magestaff.cpp
+++ b/src/g_hexen/a_magestaff.cpp
@@ -29,10 +29,11 @@ class AMWeapBloodscourge : public AMageWeapon
 {
 	DECLARE_CLASS (AMWeapBloodscourge, AMageWeapon)
 public:
-	void Serialize(FArchive &arc)
+	DECLARE_OLD_SERIAL
+	void Serialize(FSerializer &arc)
 	{
 		Super::Serialize (arc);
-		arc << MStaffCount;
+		arc("mstaffcount", MStaffCount);
 	}
 	PalEntry GetBlend ()
 	{
diff --git a/src/g_shared/a_artifacts.cpp b/src/g_shared/a_artifacts.cpp
index 76426f554..77e5cede6 100644
--- a/src/g_shared/a_artifacts.cpp
+++ b/src/g_shared/a_artifacts.cpp
@@ -19,7 +19,7 @@
 #include "g_level.h"
 #include "doomstat.h"
 #include "v_palette.h"
-#include "farchive.h"
+#include "serializer.h"
 #include "r_utility.h"
 
 #include "r_data/colormaps.h"
@@ -101,12 +101,15 @@ bool APowerupGiver::Use (bool pickup)
 //
 //===========================================================================
 
-void APowerupGiver::Serialize(FArchive &arc)
+void APowerupGiver::Serialize(FSerializer &arc)
 {
 	Super::Serialize (arc);
-	arc << PowerupType;
-	arc << EffectTics << BlendColor << Mode;
-	arc << Strength;
+	auto def = (APowerupGiver*)GetDefault();
+	arc("poweruptype", PowerupType, def->PowerupType)
+		("effecttics", EffectTics, def->EffectTics)
+		("blendcolor", BlendColor, def->BlendColor)
+		("mode", Mode, def->Mode)
+		("strength", Strength, def->Strength);
 }
 
 // Powerup -------------------------------------------------------------------
@@ -136,11 +139,14 @@ void APowerup::Tick ()
 //
 //===========================================================================
 
-void APowerup::Serialize(FArchive &arc)
+void APowerup::Serialize(FSerializer &arc)
 {
 	Super::Serialize (arc);
-	arc << EffectTics << BlendColor << Mode;
-	arc << Strength;
+	auto def = (APowerup*)GetDefault();
+	arc("effecttics", EffectTics, def->EffectTics)
+		("blendcolor", BlendColor, def->BlendColor)
+		("mode", Mode, def->Mode)
+		("strength", Strength, def->Strength);
 }
 
 //===========================================================================
@@ -901,10 +907,11 @@ IMPLEMENT_CLASS (APowerTorch)
 //
 //===========================================================================
 
-void APowerTorch::Serialize(FArchive &arc)
+void APowerTorch::Serialize(FSerializer &arc)
 {
 	Super::Serialize (arc);
-	arc << NewTorch << NewTorchDelta;
+	arc("newtorch", NewTorch)
+		("newtorchdelta", NewTorchDelta);
 }
 
 //===========================================================================
@@ -963,10 +970,10 @@ IMPLEMENT_CLASS (APowerFlight)
 //
 //===========================================================================
 
-void APowerFlight::Serialize(FArchive &arc)
+void APowerFlight::Serialize(FSerializer &arc)
 {
 	Super::Serialize (arc);
-	arc << HitCenterFrame;
+	arc("hitcenterframe", HitCenterFrame);
 }
 
 //===========================================================================
@@ -1217,10 +1224,10 @@ IMPLEMENT_CLASS (APowerSpeed)
 //
 //===========================================================================
 
-void APowerSpeed::Serialize(FArchive &arc)
+void APowerSpeed::Serialize(FSerializer &arc)
 {
 	Super::Serialize (arc);
-	arc << SpeedFlags;
+	arc("speedflags", SpeedFlags);
 }
 
 //===========================================================================
@@ -1899,11 +1906,14 @@ IMPLEMENT_CLASS(APowerMorph)
 //
 //===========================================================================
 
-void APowerMorph::Serialize(FArchive &arc)
+void APowerMorph::Serialize(FSerializer &arc)
 {
 	Super::Serialize (arc);
-	arc << PlayerClass << MorphStyle << MorphFlash << UnMorphFlash;
-	arc << Player;
+	arc("playerclass", PlayerClass)
+		("morphstyle", MorphStyle)
+		("morphflash", MorphFlash)
+		("unmorphflash", UnMorphFlash)
+		("player", Player);
 }
 
 //===========================================================================
diff --git a/src/g_shared/a_artifacts.h b/src/g_shared/a_artifacts.h
index d742c2df4..97aaad0d3 100644
--- a/src/g_shared/a_artifacts.h
+++ b/src/g_shared/a_artifacts.h
@@ -16,7 +16,8 @@ public:
 	virtual bool HandlePickup (AInventory *item);
 	virtual AInventory *CreateCopy (AActor *other);
 	virtual AInventory *CreateTossable ();
-	virtual void Serialize(FArchive &arc);
+	DECLARE_OLD_SERIAL
+	virtual void Serialize(FSerializer &arc);
 	virtual void OwnerDied ();
 	virtual bool GetNoTeleportFreeze();
 	virtual PalEntry GetBlend ();
@@ -51,7 +52,8 @@ class APowerupGiver : public AInventory
 	DECLARE_CLASS_WITH_META (APowerupGiver, AInventory, PClassPowerupGiver)
 public:
 	virtual bool Use (bool pickup);
-	virtual void Serialize(FArchive &arc);
+	DECLARE_OLD_SERIAL
+	virtual void Serialize(FSerializer &arc);
 
 
 	PClassActor *PowerupType;
@@ -121,7 +123,8 @@ class APowerTorch : public APowerLightAmp
 {
 	DECLARE_CLASS (APowerTorch, APowerLightAmp)
 public:
-	void Serialize(FArchive &arc);
+	DECLARE_OLD_SERIAL
+	virtual void Serialize(FSerializer &arc);
 protected:
 	void DoEffect ();
 	int NewTorch, NewTorchDelta;
@@ -132,7 +135,8 @@ class APowerFlight : public APowerup
 	DECLARE_CLASS (APowerFlight, APowerup)
 public:
 	bool DrawPowerup (int x, int y);
-	void Serialize(FArchive &arc);
+	DECLARE_OLD_SERIAL
+	virtual void Serialize(FSerializer &arc);
 
 protected:
 	void InitEffect ();
@@ -155,7 +159,8 @@ class APowerSpeed : public APowerup
 	DECLARE_CLASS (APowerSpeed, APowerup)
 protected:
 	void DoEffect ();
-	void Serialize(FArchive &arc);
+	DECLARE_OLD_SERIAL
+	virtual void Serialize(FSerializer &arc);
 	double GetSpeedFactor();
 public:
 	int SpeedFlags;
@@ -272,7 +277,8 @@ class APowerMorph : public APowerup
 {
 	DECLARE_CLASS( APowerMorph, APowerup )
 public:
-	void Serialize(FArchive &arc);
+	DECLARE_OLD_SERIAL
+	virtual void Serialize(FSerializer &arc);
 	void SetNoCallUndoMorph() { bNoCallUndoMorph = true; }
 
 	FNameNoInit	PlayerClass, MorphFlash, UnMorphFlash;
diff --git a/src/g_shared/a_camera.cpp b/src/g_shared/a_camera.cpp
index 58eb3e114..b8f4730ad 100644
--- a/src/g_shared/a_camera.cpp
+++ b/src/g_shared/a_camera.cpp
@@ -36,7 +36,7 @@
 #include "info.h"
 #include "a_sharedglobal.h"
 #include "p_local.h"
-#include "farchive.h"
+#include "serializer.h"
 #include "math/cmath.h"
 
 /*
@@ -55,7 +55,8 @@ public:
 	void PostBeginPlay ();
 	void Tick ();
 
-	void Serialize(FArchive &arc);
+	DECLARE_OLD_SERIAL
+	void Serialize(FSerializer &arc);
 protected:
 	DAngle Center;
 	DAngle Acc;
@@ -65,10 +66,13 @@ protected:
 
 IMPLEMENT_CLASS (ASecurityCamera)
 
-void ASecurityCamera::Serialize(FArchive &arc)
+void ASecurityCamera::Serialize(FSerializer &arc)
 {
 	Super::Serialize (arc);
-	arc << Center << Acc << Delta << Range;
+	arc("center", Center)
+		("acc", Acc)
+		("delta", Delta)
+		("range", Range);
 }
 
 void ASecurityCamera::PostBeginPlay ()
@@ -114,17 +118,18 @@ public:
 	void PostBeginPlay ();
 	void Tick ();
 
-	void Serialize(FArchive &arc);
+	DECLARE_OLD_SERIAL
+	void Serialize(FSerializer &arc);
 protected:
 	DAngle MaxPitchChange;
 };
 
 IMPLEMENT_CLASS (AAimingCamera)
 
-void AAimingCamera::Serialize(FArchive &arc)
+void AAimingCamera::Serialize(FSerializer &arc)
 {
 	Super::Serialize (arc);
-	arc << MaxPitchChange;
+	arc("maxpitchchange", MaxPitchChange);
 }
 
 void AAimingCamera::PostBeginPlay ()
diff --git a/src/g_shared/a_morph.cpp b/src/g_shared/a_morph.cpp
index b8c5096c0..46ae5cac7 100644
--- a/src/g_shared/a_morph.cpp
+++ b/src/g_shared/a_morph.cpp
@@ -11,9 +11,10 @@
 #include "a_morph.h"
 #include "doomstat.h"
 #include "g_level.h"
-#include "farchive.h"
+#include "serializer.h"
 #include "p_enemy.h"
 #include "d_player.h"
+#include "r_data/sprites.h"
 
 static FRandom pr_morphmonst ("MorphMonster");
 
@@ -634,10 +635,16 @@ int AMorphProjectile::DoSpecialDamage (AActor *target, int damage, FName damaget
 	return -1;
 }
 
-void AMorphProjectile::Serialize(FArchive &arc)
+void AMorphProjectile::Serialize(FSerializer &arc)
 {
 	Super::Serialize (arc);
-	arc << PlayerClass << MonsterClass << Duration << MorphStyle << MorphFlash << UnMorphFlash;
+	auto def = (AMorphProjectile*)GetDefault();
+	arc("playerclass", PlayerClass, def->PlayerClass)
+		("monsterclass", MonsterClass, def->MonsterClass)
+		("duration", Duration, def->Duration)
+		("morphstyle", MorphStyle, def->MorphStyle)
+		("morphflash", MorphFlash, def->MorphFlash)
+		("unmorphflash", UnMorphFlash, def->UnMorphFlash);
 }
 
 
@@ -647,10 +654,14 @@ IMPLEMENT_POINTY_CLASS (AMorphedMonster)
  DECLARE_POINTER (UnmorphedMe)
 END_POINTERS
 
-void AMorphedMonster::Serialize(FArchive &arc)
+void AMorphedMonster::Serialize(FSerializer &arc)
 {
 	Super::Serialize (arc);
-	arc << UnmorphedMe << UnmorphTime << MorphStyle << MorphExitFlash << FlagsSave;
+	arc("unmorphedme", UnmorphedMe)
+		("unmorphtime", UnmorphTime)
+		("morphstyle", MorphStyle)
+		("morphexitflash", MorphExitFlash)
+		("flagsave", FlagsSave);
 }
 
 void AMorphedMonster::Destroy ()
diff --git a/src/g_shared/a_movingcamera.cpp b/src/g_shared/a_movingcamera.cpp
index c18e6c483..72ceef268 100644
--- a/src/g_shared/a_movingcamera.cpp
+++ b/src/g_shared/a_movingcamera.cpp
@@ -37,7 +37,7 @@
 #include "p_local.h"
 #include "p_lnspec.h"
 #include "doomstat.h"
-#include "farchive.h"
+#include "serializer.h"
 
 /*
 == InterpolationPoint: node along a camera's path
@@ -60,7 +60,8 @@ public:
 	AInterpolationPoint *ScanForLoop ();
 	void FormChain ();
 
-	void Serialize(FArchive &arc);
+	DECLARE_OLD_SERIAL
+	void Serialize(FSerializer &arc);
 
 	TObjPtr<AInterpolationPoint> Next;
 };
@@ -69,10 +70,10 @@ IMPLEMENT_POINTY_CLASS (AInterpolationPoint)
  DECLARE_POINTER (Next)
 END_POINTERS
 
-void AInterpolationPoint::Serialize(FArchive &arc)
+void AInterpolationPoint::Serialize(FSerializer &arc)
 {
 	Super::Serialize (arc);
-	arc << Next;
+	arc("next", Next);
 }
 
 void AInterpolationPoint::BeginPlay ()
@@ -166,7 +167,8 @@ protected:
 	virtual bool Interpolate ();
 	virtual void NewNode ();
 
-	void Serialize(FArchive &arc);
+	DECLARE_OLD_SERIAL
+	void Serialize(FSerializer &arc);
 
 	bool bActive, bJustStepped;
 	TObjPtr<AInterpolationPoint> PrevNode, CurrNode;
@@ -179,10 +181,15 @@ IMPLEMENT_POINTY_CLASS (APathFollower)
  DECLARE_POINTER (CurrNode)
 END_POINTERS
 
-void APathFollower::Serialize(FArchive &arc)
+void APathFollower::Serialize(FSerializer &arc)
 {
 	Super::Serialize (arc);
-	arc << bActive << bJustStepped << PrevNode << CurrNode << Time << HoldTime;
+	arc("active", bActive)
+		("juststepped", bJustStepped)
+		("prevnode", PrevNode)
+		("currnode", CurrNode)
+		("time", Time)
+		("holdtime", HoldTime);
 }
 
 // Interpolate between p2 and p3 along a Catmull-Rom spline
@@ -577,7 +584,8 @@ class AMovingCamera : public APathFollower
 public:
 	void PostBeginPlay ();
 
-	void Serialize(FArchive &arc);
+	DECLARE_OLD_SERIAL
+	void Serialize(FSerializer &arc);
 protected:
 	bool Interpolate ();
 
@@ -588,10 +596,10 @@ IMPLEMENT_POINTY_CLASS (AMovingCamera)
  DECLARE_POINTER (Activator)
 END_POINTERS
 
-void AMovingCamera::Serialize(FArchive &arc)
+void AMovingCamera::Serialize(FSerializer &arc)
 {
 	Super::Serialize (arc);
-	arc << Activator;
+	arc("activator", Activator);
 }
 
 void AMovingCamera::PostBeginPlay ()
diff --git a/src/g_shared/a_sharedglobal.h b/src/g_shared/a_sharedglobal.h
index b4a5fbbf7..1a03c6767 100644
--- a/src/g_shared/a_sharedglobal.h
+++ b/src/g_shared/a_sharedglobal.h
@@ -194,7 +194,8 @@ class AMorphProjectile : public AActor
 	DECLARE_CLASS (AMorphProjectile, AActor)
 public:
 	int DoSpecialDamage (AActor *target, int damage, FName damagetype);
-	void Serialize(FArchive &arc);
+	DECLARE_OLD_SERIAL
+	void Serialize(FSerializer &arc);
 
 	FNameNoInit	PlayerClass, MonsterClass, MorphFlash, UnMorphFlash;
 	int Duration, MorphStyle;
@@ -206,7 +207,8 @@ class AMorphedMonster : public AActor
 	HAS_OBJECT_POINTERS
 public:
 	void Tick ();
-	void Serialize(FArchive &arc);
+	DECLARE_OLD_SERIAL
+	void Serialize(FSerializer &arc);
 	void Die (AActor *source, AActor *inflictor, int dmgflags);
 	void Destroy ();
 
diff --git a/src/g_shared/a_soundsequence.cpp b/src/g_shared/a_soundsequence.cpp
index c1b9ced78..d824b9678 100644
--- a/src/g_shared/a_soundsequence.cpp
+++ b/src/g_shared/a_soundsequence.cpp
@@ -65,7 +65,7 @@
 #include "s_sound.h"
 #include "m_random.h"
 #include "s_sndseq.h"
-#include "farchive.h"
+#include "serializer.h"
 
 // SoundSequenceSlot --------------------------------------------------------
 
@@ -74,7 +74,8 @@ class ASoundSequenceSlot : public AActor
 	DECLARE_CLASS (ASoundSequenceSlot, AActor)
 	HAS_OBJECT_POINTERS
 public:
-	void Serialize(FArchive &arc);
+	DECLARE_OLD_SERIAL
+	void Serialize(FSerializer &arc);
 
 	TObjPtr<DSeqNode> Sequence;
 };
@@ -89,10 +90,10 @@ END_POINTERS
 //
 //==========================================================================
 
-void ASoundSequenceSlot::Serialize(FArchive &arc)
+void ASoundSequenceSlot::Serialize(FSerializer &arc)
 {
 	Super::Serialize (arc);
-	arc << Sequence;
+	arc("sequence", Sequence);
 }
 
 // SoundSequence ------------------------------------------------------------
diff --git a/src/g_strife/a_strifeglobal.h b/src/g_strife/a_strifeglobal.h
index 58974e41e..30a14e91b 100644
--- a/src/g_strife/a_strifeglobal.h
+++ b/src/g_strife/a_strifeglobal.h
@@ -55,7 +55,8 @@ class ASigil : public AWeapon
 public:
 	bool HandlePickup (AInventory *item);
 	AInventory *CreateCopy (AActor *other);
-	void Serialize(FArchive &arc);
+	DECLARE_OLD_SERIAL
+	void Serialize(FSerializer &arc);
 	bool SpecialDropAction (AActor *dropper);
 	static int GiveSigilPiece (AActor *daPlayer);
 	void BeginPlay();
diff --git a/src/g_strife/a_strifestuff.cpp b/src/g_strife/a_strifestuff.cpp
index 4533016ec..ad6bbe133 100644
--- a/src/g_strife/a_strifestuff.cpp
+++ b/src/g_strife/a_strifestuff.cpp
@@ -18,7 +18,7 @@
 #include "templates.h"
 #include "d_event.h"
 #include "v_font.h"
-#include "farchive.h"
+#include "serializer.h"
 #include "p_spec.h"
 #include "portal.h"
 
diff --git a/src/g_strife/a_strifeweapons.cpp b/src/g_strife/a_strifeweapons.cpp
index de03e6049..be3c3bf2b 100644
--- a/src/g_strife/a_strifeweapons.cpp
+++ b/src/g_strife/a_strifeweapons.cpp
@@ -753,10 +753,11 @@ void ASigil::BeginPlay()
 //
 //============================================================================
 
-void ASigil::Serialize(FArchive &arc)
+void ASigil::Serialize(FSerializer &arc)
 {
 	Super::Serialize (arc);
-	arc << NumPieces << DownPieces;
+	arc("numpieces", NumPieces)
+		("downpieces", DownPieces);
 }
 
 //============================================================================
diff --git a/src/p_user.cpp b/src/p_user.cpp
index 25bdd70aa..bfefca466 100644
--- a/src/p_user.cpp
+++ b/src/p_user.cpp
@@ -53,6 +53,7 @@
 #include "d_net.h"
 #include "gstrings.h"
 #include "farchive.h"
+#include "serializer.h"
 #include "r_renderer.h"
 #include "d_player.h"
 #include "r_utility.h"
@@ -631,29 +632,32 @@ END_POINTERS
 
 IMPLEMENT_CLASS (APlayerChunk)
 
-void APlayerPawn::Serialize(FArchive &arc)
+void APlayerPawn::Serialize(FSerializer &arc)
 {
 	Super::Serialize (arc);
+	auto def = (APlayerPawn*)GetDefault();
 
-	arc << JumpZ
-		<< MaxHealth
-		<< RunHealth
-		<< SpawnMask
-		<< ForwardMove1
-		<< ForwardMove2
-		<< SideMove1
-		<< SideMove2
-		<< ScoreIcon
-		<< InvFirst
-		<< InvSel
-		<< MorphWeapon
-		<< DamageFade
-		<< PlayerFlags
-		<< FlechetteType;
-	arc << GruntSpeed << FallingScreamMinSpeed << FallingScreamMaxSpeed;
-	arc << UseRange;
-	arc << AirCapacity;
-	arc << ViewHeight;
+	arc("jumpz", JumpZ, def->JumpZ)
+		("maxhealth", MaxHealth, def->MaxHealth)
+		("runhealth", RunHealth, def->RunHealth)
+		("spawnmask", SpawnMask, def->SpawnMask)
+		("forwardmove1", ForwardMove1, def->ForwardMove1)
+		("forwardmove2", ForwardMove2, def->ForwardMove2)
+		("sidemove1", SideMove1, def->SideMove1)
+		("sidemove2", SideMove2, def->SideMove2)
+		("scoreicon", ScoreIcon, def->ScoreIcon)
+		("invfirst", InvFirst)
+		("invsel", InvSel)
+		("morphweapon", MorphWeapon, def->MorphWeapon)
+		("damagefade", DamageFade, def->DamageFade)
+		("playerflags", PlayerFlags, def->PlayerFlags)
+		("flechettetype", FlechetteType, def->FlechetteType)
+		("gruntspeed", GruntSpeed, def->GruntSpeed)
+		("fallingscreammin", FallingScreamMinSpeed, def->FallingScreamMinSpeed)
+		("fallingscreammaxn", FallingScreamMaxSpeed, def->FallingScreamMaxSpeed)
+		("userange", UseRange, def->UseRange)
+		("aircapacity", AirCapacity, def->AirCapacity)
+		("viewheight", ViewHeight, def->ViewHeight);
 }
 
 //===========================================================================
diff --git a/src/s_advsound.cpp b/src/s_advsound.cpp
index 0c57288f9..c390e6797 100644
--- a/src/s_advsound.cpp
+++ b/src/s_advsound.cpp
@@ -50,7 +50,7 @@
 #include "d_netinf.h"
 #include "i_system.h"
 #include "d_player.h"
-#include "farchive.h"
+#include "serializer.h"
 
 // MACROS ------------------------------------------------------------------
 
@@ -2102,7 +2102,8 @@ class AAmbientSound : public AActor
 {
 	DECLARE_CLASS (AAmbientSound, AActor)
 public:
-	void Serialize(FArchive &arc);
+	DECLARE_OLD_SERIAL
+	void Serialize(FSerializer &arc);
 
 	void MarkPrecacheSounds () const;
 	void BeginPlay ();
@@ -2125,10 +2126,11 @@ IMPLEMENT_CLASS (AAmbientSound)
 //
 //==========================================================================
 
-void AAmbientSound::Serialize(FArchive &arc)
+void AAmbientSound::Serialize(FSerializer &arc)
 {
 	Super::Serialize (arc);
-	arc << bActive << NextCheck;
+	arc("active", bActive)
+		("nextcheck", NextCheck);
 }
 
 //==========================================================================
diff --git a/src/zzz_old.cpp b/src/zzz_old.cpp
index 37486164f..82e59cbb8 100644
--- a/src/zzz_old.cpp
+++ b/src/zzz_old.cpp
@@ -1,8 +1,11 @@
 #ifdef COMMON_STUFF
 
 #include "a_doomglobal.h"
+#include "a_hexenglobal.h"
+#include "a_strifeglobal.h"
 #include "ravenshared.h"
 #include "a_weaponpiece.h"
+#include "d_dehacked.h"
 
 // For NULL states, which aren't owned by any actor, the owner
 // is recorded as AActor with the following state. AActor should
@@ -1037,6 +1040,304 @@ void AWeaponPiece::Serialize(FArchive &arc)
 	arc << WeaponClass << FullWeapon << PieceValue;
 }
 
+void DSectorEffect::Serialize(FArchive &arc)
+{
+	Super::Serialize(arc);
+	arc << m_Sector;
+}
+
+void DMover::Serialize(FArchive &arc)
+{
+	Super::Serialize(arc);
+	arc << interpolation;
+}
+
+class AAmbientSound : public AActor
+{
+	DECLARE_CLASS(AAmbientSound, AActor)
+public:
+	DECLARE_OLD_SERIAL
+	void Serialize(FSerializer &arc);
+
+	void MarkPrecacheSounds() const;
+	void BeginPlay();
+	void Tick();
+	void Activate(AActor *activator);
+	void Deactivate(AActor *activator);
+
+protected:
+	bool bActive;
+private:
+	void SetTicker(struct FAmbientSound *ambient);
+	int NextCheck;
+};
+
+void AAmbientSound::Serialize(FArchive &arc)
+{
+	Super::Serialize(arc);
+	arc << bActive << NextCheck;
+}
+
+class AInterpolationPoint : public AActor
+{
+	DECLARE_CLASS(AInterpolationPoint, AActor)
+	HAS_OBJECT_POINTERS
+public:
+	void BeginPlay();
+	void HandleSpawnFlags();
+	void Tick() {}		// Nodes do no thinking
+	AInterpolationPoint *ScanForLoop();
+	void FormChain();
+
+	DECLARE_OLD_SERIAL
+	void Serialize(FSerializer &arc);
+
+	TObjPtr<AInterpolationPoint> Next;
+};
+
+class APathFollower : public AActor
+{
+	DECLARE_CLASS(APathFollower, AActor)
+	HAS_OBJECT_POINTERS
+public:
+	void BeginPlay();
+	void PostBeginPlay();
+	void Tick();
+	void Activate(AActor *activator);
+	void Deactivate(AActor *activator);
+protected:
+	double Splerp(double p1, double p2, double p3, double p4);
+	double Lerp(double p1, double p2);
+	virtual bool Interpolate();
+	virtual void NewNode();
+
+	DECLARE_OLD_SERIAL
+	void Serialize(FSerializer &arc);
+
+	bool bActive, bJustStepped;
+	TObjPtr<AInterpolationPoint> PrevNode, CurrNode;
+	float Time;		// Runs from 0.0 to 1.0 between CurrNode and CurrNode->Next
+	int HoldTime;
+};
+
+void AInterpolationPoint::Serialize(FArchive &arc)
+{
+	Super::Serialize(arc);
+	arc << Next;
+}
+
+void APathFollower::Serialize(FArchive &arc)
+{
+	Super::Serialize(arc);
+	arc << bActive << bJustStepped << PrevNode << CurrNode << Time << HoldTime;
+}
+
+class AMovingCamera : public APathFollower
+{
+	DECLARE_CLASS(AMovingCamera, APathFollower)
+	HAS_OBJECT_POINTERS
+public:
+	void PostBeginPlay();
+
+	DECLARE_OLD_SERIAL
+	void Serialize(FSerializer &arc);
+protected:
+	bool Interpolate();
+
+	TObjPtr<AActor> Activator;
+};
+
+void AMovingCamera::Serialize(FArchive &arc)
+{
+	Super::Serialize(arc);
+	arc << Activator;
+}
+
+void AMorphProjectile::Serialize(FArchive &arc)
+{
+	Super::Serialize(arc);
+	arc << PlayerClass << MonsterClass << Duration << MorphStyle << MorphFlash << UnMorphFlash;
+}
+
+void AMorphedMonster::Serialize(FArchive &arc)
+{
+	Super::Serialize(arc);
+	arc << UnmorphedMe << UnmorphTime << MorphStyle << MorphExitFlash << FlagsSave;
+}
+
+void ADehackedPickup::Serialize(FArchive &arc)
+{
+	Super::Serialize(arc);
+	arc << droppedbymonster;
+}
+
+class ASoundSequenceSlot : public AActor
+{
+	DECLARE_CLASS(ASoundSequenceSlot, AActor)
+	HAS_OBJECT_POINTERS
+public:
+	DECLARE_OLD_SERIAL
+
+	TObjPtr<DSeqNode> Sequence;
+};
+
+void ASoundSequenceSlot::Serialize(FArchive &arc)
+{
+	Super::Serialize(arc);
+	arc << Sequence;
+}
+
+void APlayerPawn::Serialize(FArchive &arc)
+{
+	Super::Serialize(arc);
+
+	arc << JumpZ
+		<< MaxHealth
+		<< RunHealth
+		<< SpawnMask
+		<< ForwardMove1
+		<< ForwardMove2
+		<< SideMove1
+		<< SideMove2
+		<< ScoreIcon
+		<< InvFirst
+		<< InvSel
+		<< MorphWeapon
+		<< DamageFade
+		<< PlayerFlags
+		<< FlechetteType;
+	arc << GruntSpeed << FallingScreamMinSpeed << FallingScreamMaxSpeed;
+	arc << UseRange;
+	arc << AirCapacity;
+	arc << ViewHeight;
+}
+
+class APhoenixRod : public AWeapon
+{
+	DECLARE_CLASS(APhoenixRod, AWeapon)
+public:
+	DECLARE_OLD_SERIAL
+	int FlameCount;		// for flamethrower duration
+};
+
+void APhoenixRod::Serialize(FArchive &arc)
+{
+	Super::Serialize(arc);
+	arc << FlameCount;
+}
+
+class ACWeapWraithverge : public AClericWeapon
+{
+	DECLARE_CLASS(ACWeapWraithverge, AClericWeapon)
+public:
+	void Serialize(FArchive &arc);
+	BYTE CHolyCount;
+};
+
+void ACWeapWraithverge::Serialize(FArchive &arc)
+{
+	Super::Serialize(arc);
+	arc << CHolyCount;
+}
+
+class AMWeapBloodscourge : public AMageWeapon
+{
+	DECLARE_CLASS(AMWeapBloodscourge, AMageWeapon)
+public:
+	void Serialize(FArchive &arc);
+	BYTE MStaffCount;
+};
+
+void AMWeapBloodscourge::Serialize(FArchive &arc)
+{
+	Super::Serialize(arc);
+	arc << MStaffCount;
+}
+
+void ASigil::Serialize(FArchive &arc)
+{
+	Super::Serialize(arc);
+	arc << NumPieces << DownPieces;
+}
+
+class ASecurityCamera : public AActor
+{
+	DECLARE_CLASS(ASecurityCamera, AActor)
+public:
+	void PostBeginPlay();
+	void Tick();
+
+	void Serialize(FArchive &arc);
+protected:
+	DAngle Center;
+	DAngle Acc;
+	DAngle Delta;
+	DAngle Range;
+};
+
+void ASecurityCamera::Serialize(FArchive &arc)
+{
+	Super::Serialize(arc);
+	arc << Center << Acc << Delta << Range;
+}
+
+
+class AAimingCamera : public ASecurityCamera
+{
+	DECLARE_CLASS(AAimingCamera, ASecurityCamera)
+public:
+	void PostBeginPlay();
+	void Tick();
+
+	void Serialize(FArchive &arc);
+protected:
+	DAngle MaxPitchChange;
+};
+
+void AAimingCamera::Serialize(FArchive &arc)
+{
+	Super::Serialize(arc);
+	arc << MaxPitchChange;
+}
+
+void APowerupGiver::Serialize(FArchive &arc)
+{
+	Super::Serialize(arc);
+	arc << PowerupType;
+	arc << EffectTics << BlendColor << Mode;
+	arc << Strength;
+}
+void APowerup::Serialize(FArchive &arc)
+{
+	Super::Serialize(arc);
+	arc << EffectTics << BlendColor << Mode;
+	arc << Strength;
+}
+
+void APowerTorch::Serialize(FArchive &arc)
+{
+	Super::Serialize(arc);
+	arc << NewTorch << NewTorchDelta;
+}
+
+void APowerFlight::Serialize(FArchive &arc)
+{
+	Super::Serialize(arc);
+	arc << HitCenterFrame;
+}
+
+void APowerSpeed::Serialize(FArchive &arc)
+{
+	Super::Serialize(arc);
+	arc << SpeedFlags;
+}
+
+void APowerMorph::Serialize(FArchive &arc)
+{
+	Super::Serialize(arc);
+	arc << PlayerClass << MorphStyle << MorphFlash << UnMorphFlash;
+	arc << Player;
+}
 
 
 #endif
\ No newline at end of file