4. BlayzBloo: Super Melee Brawlers Battle Royale
Another one you may not have heard of, this was released on DSiWare and incorporated all the titles of the Smash Bros. series into it, and even added the title for Playstation's Smash Bros. clone in there too for good measure. This game had only five characters, and used a lot of music from the main BlazBlue series, which is often well received. Unfortunately it never saw released in Europe but was a great little addition for DSi owners in America & Japan.