I couldn't really say that The Idolmaster is the greatest idol simulator game. Each section consists of a series of dull minigames to raise the idol's stats. However, the characters have sickeningly adorable personalities that make the player fall in love with them. I can't remember any other game that required me to wipe away a girl's tears to raise her spirits, but it makes sense in the context of this game. Idolmaster is strangely addicting, but players need to commit a lot of time just to succeed.