Attak is an excellent, physics-based, destructible terrain, superhuman abilities, flash game that comes from JohnnyTwoShoes.com.

Attak Beta Page
Direct link to game file

Controls:
Up: Charge Jump/Jump/Press again after charged jump for double jump boost
Down: Charge your special gauge
Left/Right: Move
,:Punch/Kick
.:Energy Blast
/:Special Attack

IMPORTANT NOTE: If the game stops loading on a red screen(or any screen), refresh your broswer, the game's pre-loading is glitchy.

Press ESC at anytime to change key setup up, also, if the special effects make you lag, toggle the quality button in the setup screen.

You can also resize your browser window so all the moving vectors take less resources

Screens:
Knocking your opponent through the destructible terrain(I just got kicked into the ground)

Homing shots


Tips: Momentum from jumping and falling can be combined with the melee attack to create devastating blows, which can knock your opponent high up into the sky, or down into the earth's crust.
Using the Cyborg's Jetpack ability with this logic can create extremely destructive and lethal results. Warning though, your attack can be countered and you can be hit for the damage you could of caused.

Boxes(as seen in the second screen) can be picked up by holding down while standing on them, and thrown using the melee attack key.

Note: At the moment, this beta only has 3 selectable characters, but the locked characters can still be used by the AI.