CAMM (Crystal Alien Map Maker) is an open source level/map editor for the Lego Mars Mission CrystAlien Conflict Game.
Currently it lacks the ability to load the maps into the game, but we're working on a solution for that with the development of a Flash wrapper for CrystAlien Conflict.
CAMM is part of the CrystAlien Redux project which aims to extend the CrystAlien Conflict game.
Early test builds for CAMM can be found on the AppVeyor build system and mirrored to crystalien-redux.com.
For more information about the project visit the project's page on the Lego Mars Mission Fan-Made Wiki.