Well this info explains plenty

http://e3.gamespot.com/story.html?sid=6193708&pid;=943567&tag;=topslot%3Btitle%3B1&om;_act=convert&om;_clk=topslot&page;=2

I've put down the important stuff.


NOTE:THIS GAME IS STILL A WORK IN PROGRESS:The E3 demo of MK vs. DC is very much a work in progress and featured a handful of fighters and environments to try. We go to choose from six fighters total, three from each side. The Mortal Kombat characters on tap in the demo were Sonya Blade and BFF's Scorpion and Sub-Zero while, on the DC side, we had Batman, Flash, and Superman. There were three environments to choose from: a graveyard, hell, and Superman's hometown, Metropolis.

TEST YOUR MIGHT!
As far as the new "test your might" minigame goes, we have to say we're very pleased by how it fits in to the action. We stumbled on it in the Metropolis stage when we'd backed an opponent into a wall. After knocking them through the wall our character, Superman, grabbed them and started running to the right, slamming through wall after wall. The sequence required us to mash face buttons which upped the damage. Much like the sequences we just mentioned, it's a quick break in the fight. While the timing is being tweaked we're liking how they work. You're not pulled out of the fight for too long and they all keep you on your toes, adding a welcome unpredictability to battle.

GAME GRAPHICS (THEY THINK THE GRAPHICS ARE SEXY!)
Before we start waxing poetic on how sexy the game looks--and it does--we'll give up the goods on how it plays: pretty well. Game director and MK creator Ed Boon told us that the development team is taking a back-to-basics approach to gameplay which, to our eyes, has some heavy MK II influences. Characters have a set amount of special moves that you can mix together into combos of your choosing. You won't find MKIII-style chain combos that will clock up hit counts in the double digits; instead you'll find combos in the 3-5 hit range. This is still being tweaked so it may change but we have to say we kind of like how it's working.

OVERALL GAMESPOT LOVE THIS GAME!