crap. i wrote a huge post and the submission crapped out. here i go again... but shorter. Anyone know a site where I can learn more about the Quake source code? I''ve downloaded the GPL''d code, and can''t understand the sparsely commented source. Or perhaps someone here can answer some questions on how Carmack wrote the net code? For instance, did he use blocking, nonblocking , or asynchronous sockets? Did he use threads? How does he handle Game Timing? (game speed, framerates, cpu speed, object movements, etc?) PS: I''m halfway through MPGP by Todd Barron. Not bad. I only wish it were more technical and focused more on network code involving nonblocking/asynchronous sockets and threading. Seeing lots of Direct Play code really irked me. A deeper analysis on what guys like Sweeney and Carmack use in their code would have been great. This should be feasible, since alot of source code is out there. (I hear you can get the Tribes source code for $150, which supposedly has great net code) I don''t want to design my net code only knowing just the very basics, only to poorly reinvent the wheel. If anyone can reccommend any other books that give insight into how games like Quake and Unreal are designed, I''d appreciate it! Thanks.