During the development of Half-Life, a version for PowerPC was made. The version was nearly done then was scrapped due to demand being low. Leaving us, PPC users, in the cold. Half-Life was created on the GoldSrc engine which is a heavily modified version of Quake.The keyword here is "Quake". Quake is supported on the PPC platform in different engines(Darkplaces,FuhQuake,etc) After hours of experimenting, I got something. Its a pretty buggy state, but hey, its something.