Halo: Custom Edition

Summary
Halo: Custom Edition is a pure free-standing multiplayer add-on for Halo PC. It's free-standing in the sense that you don't need to have Halo PC installed to play the game, however you need the cd-key from the retail game. The point of Halo: Custom Edition is to allow modders to create their own content such as new maps and mods which will hopefully result in a more varied game experience and extend the lifetime of Halo. However, due to the large size of the Halo Custom Edition installation file (and long download times for dial-up users), Halo Custom Edition rarely has more than 200 players on at once.

Along with the ability to mod the game Gearbox Software also fixed a number of bugs and graphical issues that can still be found in Halo PC.

Screenshots

 * New Mombasa level
 * Castel 2 Castel level
 * Better netcode screenshot

Related Links

 * List of Halo Custom Edition Levels
 * Halo Editing Kit

Other
There are also 'cheats' for halo CE, called Developer Mode, more commonly called devmode, or dev. It is used by map designers to test out maps they make. It can also be used to cheat in single-player maps that can be downloaded. However they can only be used in single-player maps because when dev is activated, the host can only start a server through LAN. The only way for it to work in multiplayer is to download it. But even then most of the cheats can only be used by the host.