Chair Entertainment's Shadow Complex is out today on Xbox LIVE Arcade for 1200 MS Points, or 15 American dollars. It's a "Metroidvania"-style side-scroller, heavily influenced by Super Metroid. You blow a lot of things up, and get a lot of cool gadgets in the process.
Not sold on it yet? How's this: There's a review after the jump, but in the time it could take you to read it, you could have already downloaded Shadow Complex and started playing it. There, I said it -- go buy Shadow Complex. Yes, I think it's that good.
But if you want more words, or need more convincing, hit the jump.