Call of Duty 2 Category Browser

Players team up against computer-controlled enemies.

Players fight other players.

Servers for trading items with other players.

Sniper-focused servers where everyone uses the AWP.

Servers that stay close to the base game, with few or no mods.

Practice servers for warming up and learning maps or skills.

Some players start infected and spread it to the rest. Humans try to survive.

Build and play freely with props and tools, as in Garry's Mod.

Play a character in a persistent world with jobs, rules and other players.

Surf maps with timers, records and rankings.

Humans run for the end of the map and escape while infected zombies chase them.

Fight, respawn straight away and keep scoring kills.

Guards run a jail and prisoners try to break the rules and escape.

Maps and servers for practising your aim.

Trouble in Terrorist Town: a few hidden traitors try to kill the innocents.

A survival mod for Arma 3 where you loot, build bases and trade.

Small arenas for quick one-on-one duels.

A bomb is already planted. Counter-Terrorists retake the site while Terrorists defend it.

Everyone for themselves. The most kills wins.

Team up against computer-controlled enemies instead of each other, as in Left 4 Dead and Left 4 Dead 2.

Chain jumps to build speed and finish movement maps.

Climbing and jumping maps where you time your runs, mainly in Counter-Strike.

Every kill gives you a new weapon. The first to finish the list wins.

Servers that rotate through lots of short, simple games.

Servers that run player-made maps.

One team disguises itself as props and the other hunts them.

Team Fortress 2 Mann vs. Machine: a team of players fights waves of robots.

Two teams fight each other, such as survivors against infected in Left 4 Dead.

Runners dodge traps to reach the end while one player activates them and tries to kill the runners.

Servers made for idling, often to earn item drops or playtime.