But! "ManiaPlanet" is a platform that supports video games. Specifically, it's a "user-powered PC gaming zone" (according to Ubisoft CEO Yves Guillemot) for TrackMania 2 (beta coming Q4 2010) and additional "Mania" games, including the previously announced FPS ShootMania (beta Q1 2011) and RPG QuestMania (beta "soon").
Like TrackMania before them, the new Mania titles from Nadeo will emphasize player-created content. Presumably, ManiaPlanet connects the content and creation systems across all Mania games in one convenient application. Imagine that.