It is not out yet but, Ripple Dot Zero is the flash game. It got a Sonic The Hedgehog, feel to it.
The game just released today you guy should check it out.
Ripple Dot Zero
I am having a blast playing it so far.
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The parallax and artwork in the game are amazing. It feels like a cross between megaman and sonic. Although there doesn't seem to be a direct story yet, the gameplay itself is actually quite fun.
This game is great! Seriously well done to everyone who worked on it! Really enjoyed playing it!