Two players is really the ideal number for multiplayer, as that combo inspires teamwork by providing players with enough space to focus on clearing the level at hand. The frantic rush of four simultaneous players is a hectic as ever, but it’s at least a little easier to keep clear on an HD screen. As a solo game, New Super Mario Bros U is a tasty slice of traditional Mario fun, and fortunately it preserves many of its best qualities when played in groups as big as five.