This project doesn't use any code from 'Quake 2 Touch' (and other Beloko's and monica john's 'ports'). Basically a software rendered take on implementing Darkplaces level features. QII4A stands for 'Quality Impressive Incredible game engine FOR All.'. Unlike most other Quake II source ports Yamagi Quake II is fully 64-bit clean. What are the best source ports for Quake and the best for Quake II? The only Quake II engine I know of which is continually updated/developed is Knightmare Quake II The other was Quake II Evolved which attempted to resemble Doom 3 but that shortly vanished into the ether, Knightmare is the only long and last standing Q2 engine thus far. Missing mentions for Tenebrae that brought fancy Doom 3 lighting to Quake years before Doom 3 came around (and Tenebrae 2.) share.