The only way to play this game in screen split is the version of XBOX? You are saying that?
Sorry to say, but split screen is not supported with Inversion. I wanted to check this out for myself and my girlfriend too, but unfortunately many different sites say it's not split-screen co-op, just through XBOX Live.XYorX
I think that website made a mistake. It doesn't have split screen as far as I'm aware.
Many people thought it would, and some websites listed the game as having split-screen/local co-op ages ago, but the developers of the game never claimed it would have split screen. Only way to do co-op is over the internet with someone else that has the game.
No, there is no split-screen offered in this game. The confusion (acording to Co-Optimus) is that split-screen support was confirmed via press release numerous times over. Even up to a couple months before the game came out the company that produced Inversion was claiming it would have split-screen. Then, of course, we all buy the game to discover that the sole reason many of us purchased it was missing.