Just the one XBLA release this week, Snoopy Flying Ace for 800 points.
Snoopy Flying Ace
Take your Avatar to new heights with Snoopy and the rest of the Peanuts gang, for the aerial duel of the century! Master the single player and co-op challenges between root beers at the Officers Club, then try your skills online in 9 different solo and team games. With simple flight controls and a hangar full of customizable planes and weapons, all you need are nerves of steel to climb the Leaderboards and become a Flying Ace.
Snoopy Flying Ace costs 800 
and you can find more information on the Marketplace.
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Just played the demo. I have to say that firstly I am useless at flying games, I cant fly airplanes (or helicopters) to save my life. Fortunately Snoopy is easy to control and flying is more fun than serious. The single player demo is short with (I think) only one level to play on which did not show much of the game.
You can however play the multiplayer game in the demo which allowed a deathmatch mode with up to 16 players battling it out. The game I played was action packed and fun but as I am not good at flying I got shot down like a clay pigeon in most cases
I personally wouldn't buy it but flying game fans should definitely check it out.
The game looks and sounds fantastic, but I really wish the demo offered a little more in terms of single player to try out.
Going to finish up the campaign within next 24 hours and explore a little more online, and then a full review should be up. Want a tip right now though? Buy this game.
I remember seeing footage of this last year and thinking it looked ace…. Only roblem is it is still a flying game and I suck at those…….. Will try the demo though based on what you guys have said