Focus Home Interactive and Nadeo today released TrackMania United Forever, a free add-on expansion that allows players of TrackMania Nations and TrackMania United to play together for the first time.

TrackMania United offers all seven original TrackMania environments, including Desert, Stadium and Rally, while the "Forever" add-on brings a spectacular graphical overhaul for these three environments originally released with the first TrackMania.

Nadeo have also included new solo campaigns, as well as new tracks and background blocks for added diversity when creating tracks. Head over to the official site for more information.