You have to pay for the cool stuff.

I was having lots of fun playing, but then I got farther into the game, and all the cool stuff is all bundle exclusive or $5 each. Just make a decent (as decent as this) free game where you can do this but not have to pay for everything. Its a total mood killer when you find out you have to pay for everything. Otherwise, if you dont mind paying 20 dollars in game, then go for it. :(

JumpGecko about Mix+Smash: Marvel Super Hero Mashers, v1.8