A number of factors keeping it a PS3 title for now
Just Add Water: the developer of the new Oddworld title called “Oddworld: Stranger’s Wrath” is only a PlayStation 3 title for now. The title that is set to arrive on the PSN for the PS3 around April of 2011 is being held up from release on the Xbox 360 by a number of factors.
The biggest of these factors is apparently the size of the game. Sources are confirming that the game is currently about 2.1GB and that is over the Xbox Live Arcade size limit of 2GB. The size of Xbox Live Arcade titles has grown over the past couple of years, and Microsoft has raised the allowable size limit several times to keep up.
Whispers suggest that the 2GB size limit may, in fact, be an Xbox 360 hardware limit. While the developers continue to insist that the game is not a PS3 exclusive, they are going to have to pull a rabbit out of their hats to get the game under the limit with some sort of compression technology, so that the game will be small enough to fit under the 2GB bar and still have room to support updates. The other option is to get Microsoft to increase the size limit or allow an exception for the title.
The developers are working with Microsoft to deal with the size issue, but they believe that the final decision will rest with Microsoft at this point, unless another solution can be found. The Xbox 360 version of the title remains unannounced currently, and it does seem that the options are a bit limited. It is still unknown how this is going to play out, but despite all of the flack from Xbox 360 fans, it would appear that there is little that can be done to resolve the situation.