This goes hand - in - hand with the new engine that has been built for the game, with more focus on realistic physics and interactive stage elements. (plusxp.com)
Occasionally, moving stage elements happen in such a way that you'll lose a life from being crushed. (nintendowire.com)
Players will have their choice from a variety of classic weapons and will also have to contend with different stage elements while trying to beat up on their opponent. (thatvideogameblog.com)