Yeah, it's p-cool.
The basic idea of GunGame is every time you get a kill, you get a new weapon. This could be in a random order, this could be sequentially, ending with the last two weapons being a Grenade, and a knife.
A GunGame like game mode was added into the latest iteration of Modern Warfare. It's also going to be an officially supported game mode in CS:GO. GunGame isn't like Warcraft 3, SuperHero, or whatever mods. At it's core, you're are still playing Counter Strike, just a different game mode.
Most GunGame servers run under the three following game modes:
- Stock: When you die, you're dead till the rounds over
Deathmatch: When you die, you either instantly come back to life, or after a brief delay.
A few servers run Elimination: When you die, you come back to life when your killer gets killed.
If you have never played GunGame before, or you havent played since 5.1 came out. Get on an Elimination Turbo server and mess around. It's actually fun.
GunGame requires EventScripts for Source, as well as an officially supported Python extension for EventScripts.
An installation guide, as well as documentation for GunGame can be found on their wiki at http://wiki.gungame.net/pages/Main_Page