Xbox Live Arcade is a very complex piece of software. And what's more complicated are the games that go in the arcade. Of course, Microsoft knows that when they sell over 10 million consoles a year, they need more than just a bunch of simple shoot-em-ups you can find at any bowling alley/bar. And so, they have set requirements for the games that get on their arcade.

• Games must be non-combatant and multi-player.
• There need to be more board games
• There needs to be a lot more original or "experimental" games.

Microsoft has often been criticizing for hosting a lot of old classics that have either been left alone or redone, essentially lacking new content. Microsoft is fixing this as fast as they can, which unfortunately is six to nine months per game.