A doujin visual novel developed by 4 radical Fullmetal Alchemist fans in 2004. The 4 collage students who came together to make this game tried to make some money off of it. Sadly, the copywrite infringement was enough so that it only managed to sell 100 copies world wide making it one of the rarest anime-based games in history.
The story takes place after the events of the 7th volume in the manga (so right around the end of season 1 of Fullmetal Alchemist Brotherhood.) It's an alternative universe which asks a simple question. "What if Alphonse got his body back early on?" The game is widely known for having a character which is referred to as "Pride Edward".
Bluebird's Illusion has yet to have been translated as of August 2011, and the written translations of the game are scattered and somewhat broken. An attempt by youtuber "BluebirdsCircle" has been made to make an English dub out of it which remains as of now the most accurate translation.