diff --git a/polymer/eduke32/source/_functio.h b/polymer/eduke32/source/_functio.h
index 6b0de6c7a..a9fa5e0bb 100644
--- a/polymer/eduke32/source/_functio.h
+++ b/polymer/eduke32/source/_functio.h
@@ -33,6 +33,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #ifdef EXTERNC
 {
 #endif
+// KEEPINSYNC lunatic/con_lang.lua
 char gamefunctions[NUMGAMEFUNCTIONS][MAXGAMEFUNCLEN] =
    {
    "Move_Forward",
diff --git a/polymer/eduke32/source/actors.h b/polymer/eduke32/source/actors.h
index 6770e6f2c..b7e52fe86 100644
--- a/polymer/eduke32/source/actors.h
+++ b/polymer/eduke32/source/actors.h
@@ -29,6 +29,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #define SLEEPTIME           1536
 #define ZOFFSET             (1<<8)
 
+// KEEPINSYNC lunatic/con_lang.lua
 #define STAT_DEFAULT        0
 #define STAT_ACTOR          1
 #define STAT_ZOMBIEACTOR    2
@@ -180,6 +181,7 @@ typedef struct {
 
 #pragma pack(pop)
 
+// KEEPINSYNC lunatic/con_lang.lua
 enum sflags_t {
     SPRITE_SHADOW           = 0x00000001,
     SPRITE_NVG              = 0x00000002,
@@ -201,6 +203,7 @@ enum sflags_t {
 };
 
 // custom projectiles
+// KEEPINSYNC lunatic/con_lang.lua
 enum pflags_t {
     PROJECTILE_HITSCAN             = 0x00000001,
     PROJECTILE_RPG                 = 0x00000002,
diff --git a/polymer/eduke32/source/gamedef.c b/polymer/eduke32/source/gamedef.c
index 58fac412d..245f67951 100644
--- a/polymer/eduke32/source/gamedef.c
+++ b/polymer/eduke32/source/gamedef.c
@@ -5707,6 +5707,7 @@ static void C_AddDefinition(const char *lLabel,int32_t lValue,int32_t lType)
     g_numDefaultLabels++;
 }
 
+// KEEPINSYNC lunatic/con_lang.lua
 static void C_AddDefaultDefinitions(void)
 {
     int32_t i;
diff --git a/polymer/eduke32/source/lunatic/con_lang.lua b/polymer/eduke32/source/lunatic/con_lang.lua
index f9992162d..7e979e08f 100644
--- a/polymer/eduke32/source/lunatic/con_lang.lua
+++ b/polymer/eduke32/source/lunatic/con_lang.lua
@@ -20,7 +20,8 @@ MAXSKILLS = 7
 MAXSOUNDS = 4096
 
 
--- KEEPINSYNC gamedef.h
+-- KEEPINSYNC with gamedef.c:C_AddDefaultDefinitions() and the respective
+-- defines
 labels =
 {
     {
@@ -161,6 +162,103 @@ labels =
         EVENT_PREGAME = 93,
         EVENT_CHANGEMENU = 94,
     },
+
+    {
+        SFLAG_SHADOW           = 0x00000001,
+        SFLAG_NVG              = 0x00000002,
+        SFLAG_NOSHADE          = 0x00000004,
+        SFLAG_PROJECTILE       = 0x00000008,
+        SFLAG_DECAL            = 0x00000010,
+        SFLAG_BADGUY           = 0x00000020,
+        SFLAG_NOPAL            = 0x00000040,
+        SFLAG_NOEVENTCODE      = 0x00000080,
+        SFLAG_NOLIGHT          = 0x00000100,
+        SFLAG_USEACTIVATOR     = 0x00000200,
+        SFLAG_NULL             = 0x00000400,
+        SFLAG_NOCLIP           = 0x00000800,
+        SFLAG_NOFLOORSHADOW    = 0x00001000,
+        SFLAG_SMOOTHMOVE       = 0x00002000,
+        SFLAG_NOTELEPORT       = 0x00004000,
+--        SFLAG_BADGUYSTAYPUT    = 0x00008000,
+--        SFLAG_CACHE            = 0x00010000,
+    },
+
+    {
+        STAT_DEFAULT = 0,
+        STAT_ACTOR = 1,
+        STAT_ZOMBIEACTOR = 2,
+        STAT_EFFECTOR = 3,
+        STAT_PROJECTILE = 4,
+        STAT_MISC = 5,
+        STAT_STANDABLE = 6,
+        STAT_LOCATOR = 7,
+        STAT_ACTIVATOR = 8,
+        STAT_TRANSPORT = 9,
+        STAT_PLAYER = 10,
+        STAT_FX = 11,
+        STAT_FALLER = 12,
+        STAT_DUMMYPLAYER = 13,
+        STAT_LIGHT = 14,
+    },
+
+    {
+        GAMEFUNC_MOVE_FORWARD = 0,
+        GAMEFUNC_MOVE_BACKWARD = 1,
+        GAMEFUNC_TURN_LEFT = 2,
+        GAMEFUNC_TURN_RIGHT = 3,
+        GAMEFUNC_STRAFE = 4,
+        GAMEFUNC_FIRE = 5,
+        GAMEFUNC_OPEN = 6,
+        GAMEFUNC_RUN = 7,
+        GAMEFUNC_AUTORUN = 8,
+        GAMEFUNC_JUMP = 9,
+        GAMEFUNC_CROUCH = 10,
+        GAMEFUNC_LOOK_UP = 11,
+        GAMEFUNC_LOOK_DOWN = 12,
+        GAMEFUNC_LOOK_LEFT = 13,
+        GAMEFUNC_LOOK_RIGHT = 14,
+        GAMEFUNC_STRAFE_LEFT = 15,
+        GAMEFUNC_STRAFE_RIGHT = 16,
+        GAMEFUNC_AIM_UP = 17,
+        GAMEFUNC_AIM_DOWN = 18,
+        GAMEFUNC_WEAPON_1 = 19,
+        GAMEFUNC_WEAPON_2 = 20,
+        GAMEFUNC_WEAPON_3 = 21,
+        GAMEFUNC_WEAPON_4 = 22,
+        GAMEFUNC_WEAPON_5 = 23,
+        GAMEFUNC_WEAPON_6 = 24,
+        GAMEFUNC_WEAPON_7 = 25,
+        GAMEFUNC_WEAPON_8 = 26,
+        GAMEFUNC_WEAPON_9 = 27,
+        GAMEFUNC_WEAPON_10 = 28,
+        GAMEFUNC_INVENTORY = 29,
+        GAMEFUNC_INVENTORY_LEFT = 30,
+        GAMEFUNC_INVENTORY_RIGHT = 31,
+        GAMEFUNC_HOLO_DUKE = 32,
+        GAMEFUNC_JETPACK = 33,
+        GAMEFUNC_NIGHTVISION = 34,
+        GAMEFUNC_MEDKIT = 35,
+        GAMEFUNC_TURNAROUND = 36,
+        GAMEFUNC_SENDMESSAGE = 37,
+        GAMEFUNC_MAP = 38,
+        GAMEFUNC_SHRINK_SCREEN = 39,
+        GAMEFUNC_ENLARGE_SCREEN = 40,
+        GAMEFUNC_CENTER_VIEW = 41,
+        GAMEFUNC_HOLSTER_WEAPON = 42,
+        GAMEFUNC_SHOW_OPPONENTS_WEAPON = 43,
+        GAMEFUNC_MAP_FOLLOW_MODE = 44,
+        GAMEFUNC_SEE_COOP_VIEW = 45,
+        GAMEFUNC_MOUSE_AIMING = 46,
+        GAMEFUNC_TOGGLE_CROSSHAIR = 47,
+        GAMEFUNC_STEROIDS = 48,
+        GAMEFUNC_QUICK_KICK = 49,
+        GAMEFUNC_NEXT_WEAPON = 50,
+        GAMEFUNC_PREVIOUS_WEAPON = 51,
+--        GAMEFUNC_SHOW_CONSOLE = 52,
+        GAMEFUNC_SHOW_DUKEMATCH_SCORES = 53,
+        GAMEFUNC_DPAD_SELECT = 54,
+        GAMEFUNC_DPAD_AIMING = 55,
+    }
 }