So much fun on a LAN.
It is pretty much your basic chaotic shooter with tons of bad guys around every corner, except that it is the same bad guys respawning just where you don't want them. Get used to it! You have a number of weapons, from the machine guns to the rocket launchers and sniper rifles. What really makes this game over everything else is the multiplay. You have all the classic game types with team, free for all, and capture the flag.
There have been good sequels since this, but I remember how much fun it was and I have to say that it was well worth the price.