Gametype

A gametype is, very simply, a set of rules by which a game is played. The Unreal Tournament Series has quite a few of these.

Unreal Tournament

 * Deathmatch
 * Team Deathmatch
 * Last Man Standing
 * Capture the Flag
 * Domination
 * Assault
 * Rocket Arena
 * Chaos

Unreal Tournament 2003

 * Deathmatch
 * Team Deathmatch
 * Capture the Flag
 * Double Domination
 * Bombing Run
 * Mutant (with Epic Bonus Pack)
 * Last Man Standing (with Epic Bonus Pack)
 * Invasion (with Epic Bonus Pack)

Unreal Tournament 2004

 * Assault
 * Onslaught (enhanced with ECE Bonus Pack)
 * Deathmatch
 * Team Deathmatch
 * Capture the Flag
 * Vehicle Capture the Flag (unlockable)
 * Double Domination
 * Bombing Run
 * Mutant
 * Invasion
 * Last Man Standing
 * Instagib CTF

Unreal Tournament 3
(Instagib CTF is probably no longer a separate gametype, but can still be enabled via a mutator.)
 * Deathmatch
 * Team Deathmatch
 * Warfare
 * Capture the Flag
 * Vehicle Capture the Flag
 * Bombing Run (?)
 * Mutant (?)
 * Invasion (?)
 * Last Man Standing (?)