Roblox
Roblox had a big change in 2006. In January 2006, Roblox made changes to become multiplayer. The API for this was not used until March 2006. In February 2006, Roblox left beta and was made free for all players. In September 2006, Roblox made changes to the multiplayer API so that players could make their own multiplayer games instead of the game being made by Roblox developers. In May 2007, the Roblox developers began making virtual items. Its first virtual item was a top hat. Roblox also started the Builders Club. This was a paid membership. Guest mod, was introduced in 2008. This was for players that want to play Roblox without making an account. Higher forms of the Builders Club were started in 2009. These were known as the Turbo Builders Club and the Outrageous Builders Club.