http://projectm.dantarion.com/downloads/Project M is a community-made mod of Brawl inspired by Super Smash Bros. Melee's gameplay designed to add rich, technical gameplay to a balanced cast of characters while additionally enhancing the speed of play. Project M employs new codes which seamlessly add in new, universal features to the entire cast to add technical variety to all characters.
Project M is playable on ANY NTSC Wii, without any hardware modification, and even without any longterm software modification. All that is needed to get started is an SD card and a copy of Super Smash Bros. Brawl.