Trench Wars is one of the most popular mods for the game Subspace. The objective is to control the flag near the top of the castle-shaped level.

Each of Subspace's eight ships have been modified to fit the role of a real life weapon, so there are shotguns, machine gunners etc. Many of the ships can kill with a single hit, so very different tactics are required.

Teamplay is much more important in Trench Wars than most other zones. There must be a balance between all the different ship types to make an effective team.