Developed by Kenneth Moodie
Uses elements of Noble Engine, developed by Mark LaCroix
Sound effects from freesound.org (I don't think I ended up using sounds from all those mentioned, but what's the harm in crediting)
joedeshon, piggimon, dannaye, wangzhuokun, skullksound, raclure, soundsofscienceupf, beexlefm, rudmer-rotteveel, 21100267, ani-music