The most unique fighting game out there, with air dodges; various items that include range weapons, projectiles, and healing; advanced techniques, including infinites; more mobility than the average fighting game; the need for altering strategies depending on character damage; and much more.
Like many fighting games, there is a tier list that changes from time to time.
Tournaments are held all over the world for this game, and the level of competetive play can get pretty intense.