This allows you to run the Hard Corps mod in dhewm3! It's the updated/remastered version of the HardQore2 mod for Doom3. A big thank you to Revility (and the rest of the HardQore2 team) for releasing the source under GPL, so I could port it to dhewm3 - and for explicitly developing Hard Corps for dhewm3! :-) You can get the game data at: https://www.moddb.com/mods/hardcorps/downloads Revility's Hard Corps git repo: https://github.com/revility/hardcorps It only contains changed files, so it doesn't compile as it is but needs the dhewm3 SDK as a base. I recommend just using the code hosted here ( https://github.com/dhewm/dhewm3-sdk/tree/hardcorps ), it works as it is.