engine allows for more realistic shadows on high end systems while the Stadium environment has double the number of blocks featured in the free version, including dirt paths, water, and indoor sections. Focus announced on November 9, 2006, that 10,000 copies of TrackMania United could be bought and pre-loaded online then activated from November 16, 2006 onwards. The game became available in retail outlets in France, Canada, Australia, Belgium, the French-speaking part of Switzerland and Russia later in 2006, then on February 23, 2007 in Germany, then on March 9, 2007 and later in other regions. The game is available in the UK and was made available in the US via download for $49.99 on March 23, 2007 and $39.99 on April 17, 2007. As of September 7, 2007, the game is available for $29.95. It was made available for pre-order and pre-load on Steam on June 7, 2007 and unlocked on June 14, 2007. Players who previously purchased TrackMania or TrackMania: Sunrise can earn a daily copper bonus in TrackMania United by registering their product keys through the game. Trackmania United Forever is an updated version of Trackmania United featuring seven environments and an all-new mediatracker. It was published by Focus Home Interactive and developed by Nadeo and has a similar layout to Trackmania Nations Forever. Four main modes are available: "Race", "Stunt", "Platform", and "Puzzle" as well as all the tracks from Trackmania Nations. TrackMania United Forever & Nations Forever On October 7, 2007, Nadeo announced that they were working on updated versions of TrackMania United and TrackMania Nations. Both new versions have Forever added to their name, and are network compatible. TrackMania Nations Forever includes the new stadium blocks and physics system introduced in TrackMania United, which allow TrackMania United Forever and TrackMania Nations Forever players to compete on the same (Stadium) servers. Nadeo has stated that because they want the game to have a long lifespan, they are working on the engine and user interface rather than adding new content. TrackMania United Forever, for instance, no longer requires the CD to be in the drive due to different copy protection and anti-cheat systems. They also warn players that some features may not be the final versions. TrackMania United Forever was released on April 15, 2008, with the free-to-play variant TrackMania Nations Forever released the following day. As of 9 December 2010, following the closure of the