It's a board game that is a fighting game; each player picks a character from the roster of fighters, you place your token on the board, and then proceed to try and beat the ever-loving crap out of the other guy. And you're not going blind at it; you can see exactly what your opponent has in hand before you chose your action every turn, the custom cards each player has in their deck is on a card you trade at the start of a match. You pick what you're going to do by combining a "base" (what you do) with a "style" (how you do it). You reveal your choices at the same time, and then based on the moves chosen, the order you execute is decided.
I've played maybe ten games, and I'm already starting to dig into the mindset the game asks you to have, thinking and trying to outguess your opponent. It's pretty easy to learn, but the depth in the game is kind of impressive. I don't have any idea how long I'd have to play to reach the point where it feels like I've explored all the play space in the game.