I picked it up when it when free with PS+. I wish we could get more games like it. Metroidvania is my favorite style of game. The problem is so many games of that style end up really bad. Shadow Complex was an xbox only one right? Cause that's been my arcade game of this generation. There was talk of sequels and stuff when it came out but it doesn't look like that's ever going to happen. :(
EDIT: looked it up... it's published by Microsoft so of course it's 360 exclusive. AND they did promise a sequel but that was 2 years ago. So I imagine it will get a sequel when Last Guardian comes out.
I love that genre as well. Shadow Complex is definitely Xbox only and definitely great. Insanely Twisted Shadow Planet is a Xbox/PC exclusive in a similar vein, I found it fun but a little bit too easy. Dust: An Elysian Tail is another quality title with a slight Metroidvania (MV) feel.
Guacamelee looks promising, and like I mentioned before Knytt Underground looks pretty good as well. I'll probably be buying it tonight. Hell Yeah has a decent MV feel, but ended up being quite linear.
Others that have at least a tiny bit of MV vibe in my opinion would be Castlevania: Harmony of Despair, Dishwasher Vampire Smile (Xbox only), and even Cave Story, which is an amazing game.
Is Pinball Arcade going on sale soon or something?
No, someone just mentioned it as a great downloadable title. It was actually just on sale a month or so ago.