XNA format. It's for the xbox live arcade. Which is amazing. You can make easy money on that kind of thing if you don't make a shit game. I was reading about it like last month. You can get your game on the arcade and say you have it up to buy for $3. Given that there are tons of people that play xbl, if you get at least 3000 people to play it, that's $9000 but you get i think it was 70% of the profit so you make $6300. You get paid quarterly so every few months you get a check from microsoft. One of the two guys I work with at my internship (which is an animator/illustrator) wanted to find someone who knew XNA coding so that he could try to make a game for it. He would do all the graphics. He was planning to make a game similar to Guilty Gear.