1.ioquake / ioq3The ioquake3 community effort to continue supporting/developing id's Quake III Arenafpsfps-gamefps-enginegamegame-developmentgame-engine+4 moreCGPL-2.02.9K total629 forks+86 starsfrom 2,777 · score 4.47
2.TorqueGameEngines / Torque2DA completely free, open-source, 2D game engine built on proven torque technology.CMIT1.7K total140 forks+86 starsfrom 1,634 · score 4.47
3.amzeratul / halleyA lightweight game engine written in modern C++CAPACHE-2.03.9K total180 forks+31 starsfrom 3,840 · score 3.47
4.klaussilveira / qengineRetro game engine for creating games like it's 1997game-enginegame-developmentgamedevlinuxfps3d-engine+1 moreCGPL-2.0892 total49 forks+12 starsfrom 880 · score 2.56