it's got a better sense of powerup-based exploration than pretty much anything that's come out recently. moreso than Shadow Complex, more than Metroid Other M, more than Aquaria, more than Arkham Asylum, more than Outland, more than any of those games. I think it's the best at doing that formula since Metroid Prime.
that doesn't mean it's better than all of those games -- though I'm sure it will be better than some of them -- but people need to keep their eyes on it when it launches next week.
a video for those who don't know it yet --
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xyzzy