Apparently it's only F2P
if you want to play as The Thing * . . . .
http://www.penny-arcade.com/comic/2013/06/05
Want to be someone else? $20.
* actually it's: Daredevil, Storm, Hawkeye, Scarlet Witch, and The Thing. Ooh, Hawkeye! Awsum.
its DIABLO clone.. Warrior (thing), Daredevil(rogue), Scarlet witch (mage), hawkeye (archer) etc.. You pick one and play, in the intro one more will drop ( only once) Im not sure if its random or not.. I played hawkeye and got Storm.
all the purchase hero's just do the same thing with different graphics.. but they do seem to do it better.. example: things is a ok tank, but HULK seems to tank better.. at the same level hawkeye can take 4-5 shots to take a thug down, Cyclops takes 2-3 shots.. of course I cant really tell the delay between shots without playing him.. so there may be some "balance" with that..
game is not to bad.. DIABLO is very accurate.. You can go into zones all your own( very small and quick, with a chest at end) or instances with others.. you automatically join the group, you can go wherever you want, but most contain a boss you wont beat without the others. Open areas often have a BOSS wandering around also.. Solo death is respawn, in groups you can be "picked back up" by another player..
loot is what you expect.. stuff drops for all classes, but stuff for your hero seems to be 60-75% of it.. so you will always be upgrading and such.. Costumes pretty much stay the same.. I have seen no difference in mine no matter what i put on.. I dont see anything in cash store that is required to play.. You can buy health pots exp boasters etc (i have seen Exp booster just drop too) Cash shop is mainly to buy other hero's, pets, or other costumes (Old gray iron man, new Red iron mane etc.. all based on something they wore in comics it seems, Spiddy has 3-4 different ones etc..)
game is based on chapters.. way-points like Diablo so you can quick travel once you have been to them. Zones are large. Has the newer DIABLO 3 "special" mobs they glow a different color and are harder.. drop better loot and are random.
I enjoy seeing the villains and learning how to fight them. They have appeared quite often level 10 i had fought 4-5 of them.. Rhino being the only "major" one that i noticed.. Locations seem varied, in 10 levels i have seen run down city, docks, beach, jungle, factories.. all well done and varied enough.. In 10 levels i have seen 20-30 different enemy types, Im sure its in game but i havent seen the colored enemy trick.. same enemy , just different color..
all i can say, if you liked DIABLO at all, this is free, and plays ok.. worth a look for sure.