Aperture Science - A Fanmade Homebrew ‘Portal’ game For Nintendo DS
Since Valve doesn’t seem to be showing Nintendo fans love any time soon, some clever homebrewers decided to take matters into their own hands. Aperture Science from Lobo and Smealum is a completely original story featuring Doug Rattman as the protagonist and it even has a level editor. You can download an unfinished 14-level test build with level editor here.
Click through for some videos to see it in action.