Doors are objects used in Mapmaker. Doors are inserted between 2 open tiles. They can be programmed to be locked or unlocked, or require a key to open it. The doors can be programed to open with any of four color keys: red, blue, yellow or green.
In the TimeSplitters Future Perfect Mapmaker, additional options are available, such as the door automatically closing or not closing after being opened, the door becoming automatically locked or remaining unlocked upon closing, and the option to have the door operated remotely via a switch.