Quake

Also, in Quake II version 3.20, the OpenGL function handling code was completely rewritten,
Linux Quake HOWTO
Sometimes when Quake/Quake II exits abnormally, it leaves my console unusable. 36
resulting in significant speedups.
Additionally, for Pentium Pro and Pentium II users, there are some tweaks than can be done with memory
buffering − the latest /dev/3dfx device driver has support for automatically setting this up for you.
Enabling MTRRs can result in significant (10 fps on my system) GL Quake speedups. See
http://glide.xxedgexx.com/MTRR.html for some more detailed information about this.
On a PPro/PII system with a Voodoo2, performance under Linux is now at least as fast as under Windows.
How can I start a server and log off, then come back to it later?
screen(1) is a great utility for this sort of thing. It allows you to create many virtual screens in one tty and
switch between them. Screen comes with most distributions. You can download it from
ftp://prep.ai.mit.edu/pub/gnu or any GNU mirror.
Start screen by typing the command screen, then create a new screen window by pressing CTRL−A
CTRL−C. You won't see much as you do these things, but be assured, something is happening.
Start a Quakeworld server:
/usr/local/games/quake/qwsv
Now open a new screen window with CTRL−A CTRL−C and start up a Quake II server:
/usr/local/games/quake2/quake2 +set dedicated 1
You can switch back and forth between your servers by pressing CTRL−A CTRL−N.
Press CTRL−A CTRL−D to detach from the screen program. Screen and your servers are still running, but
they're no longer visible in your terminal window. You can logoff now and your processes will continue to
run normally.