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Seems pretty rigged for blue (control-wise, but also certain stages seem to give a win when it doesn't seem like it should). Also, collisions taking points away from each player can make the game last forever, making it relatively easy for a losing player to hold on (or win) unless they get some bad stage luck. Game design seems like he's trolling, but it could potentially be something interesting if tweaked. Not sure if online play lag would be okay for such a speed/reaction-intensive game, but with rollback perhaps.
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I give this a 5 out of 5. It's rare to see an actually original concept for this kind of game. I think this whole idea of two players having to strategically position themselves according to the other while the other does the same to be very unique.
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Now I understand, you're the guy who made VVVVVV, among other fantastic things. Geez, even your small projects are beyond awesome.