Perfect. Just perfect.
Concept: 10/10
Super Smash Bros: Newgrounds Version. Enough Said.
Graphics: 9/10
Very cartoony, but definatley the best out of Mindchambers prowess.
Sound: 10/10
Catchy tracks, excellently composed, many of them are dark and moody and put you in the mood to kick the tar out of some Newgrounds celebrities.
Playability: 10/10
Awesome controls. Doing combos is especially fun.
Entertainment: 10/10
If you like fighting games like SSB, this is an automatic must-play for Newgrounders. It is impossible not to enjoy this.
Overall: 10/10
I wouldn't change anything, for two reasons:
1. It is perfect enough already
2. I don't want my data to be cleared :P