TrackMania United offers all seven original TrackMania environments (Desert, Island, Stadium...), while the “Forever” add-on brings a spectacular graphical overhaul for the three environments originally released with the first TrackMania. It's a real facelift for these three historical and extremely popular TrackMania environments. As for content, TrackMania United Forever is very generous, as it includes new solo campaigns, numerous new official tracks and new track and background blocks that add even more variety and possibilities when creating fresh TrackMania tracks.

In order to offer even more interactivity, TrackMania United Forever lets player create and manage groups of friends in-game, much in the same way they would in Facebook or Myspace. Players will appreciate the new invite management features like the “Challenge Invitation,” which enables you to send your best time on a track to a friend, directly by email or Instant Messenger. By simply clicking on a file as small as a few kb, your friend will immediately launch the game and compete next to a ghost representing the performance you've just sent him!