@KingS van Graan - do you use the instant-on start up option? Last time that happened to me with a game of mine, I had to power cycle it (hold the power button for 5ish sec) and it eventually picked up again.
Unleash an arsenal of shots and strategies in all-out tennis battles with friends, family, and fan-favorite Mushroom Kingdom characters. Whether you play locally, online, or using simple motion controls, intense rallies await! In Adventure mode, experience a new favor of tennis gameplay, with a variety of missions, boss battles and more.
Complete missions and boss battles in Adventure mode while mastering the controls. Test your hard-earned skills in singles or doubles with up to 4 players in local or online multiplayer, not to mention Tournament Mode, which lets you challenge the CPU.
Store up energy and use it to pull off amazing feats: move so fast the world slows down around you or aim in first-person to send the ball crashing down! Your rivals may attempt to block you, but if they fail, their racket will take damage - and break after three hits. Fully charge your energy to launch the ball with enough force to KO your opponent!