I did a review on this awhile back in the cag reviews section. I have a strong background in 2d fighters, on both capcom and snk platforms. I like this game, but the AI is really bad, and unless you cheat to unlock all the characters, then its extremely difficult. (unlocking the godess and demon from "gargoyles quest" at the end.)
I liked this game, because of the old school feel, but at 20. I say wait for it to drop even more. At least 15.
The biggest flaw of this game, is that the computer can do unlimited, and perfectly timed supers. Sometimes its done over and over, so you will die from blocking. Or sometimes you get hit and have a lvl 3 psycho crusher done to you... then again a sec later.
And trying to go up against this, and unlocking everyone. Took me many long and frustrating tries.
If you have a few buds to play against then 20 may be ok. But try to wait for the price to drop a bit more.
In today's gamer world, this could have been so much better. Like capcom vs snk, or mvc. Instead this leans more towards SF the movie quality. Not as bad...but definetely more towards it than the other fighting gems.