Today nintendo annouced another mario game. Mario Super Sluggers.
[quote name='kotaku']
Nintendo kicked off its Media Summit this morning with a quick preview of its next mascot-filled baseball title, now known as Mario Super Sluggers. Nintendo of America's Bill Trinnen walked the gathered press through a single inning—much speedier than the real life thing—featuring the Mario Firebats team taking on the Peach Royals. Like Super Mario Strikers, Mario Super Sluggers uses a similar coach character team set up, with second string NIntendo characters like Shy Guy and Baby Mario covering the field while the player handles pitching duties.
Mario Super Sluggers uses a control scheme built on the foundation of Wii Sports baseball, with only Wii Remote gestures required to play. With Mario as his pitcher, Trinnen demoed the game's controls, using Wii-mote swinging to throw fastballs, curveballs and, naturally, fireballs. Twists of the remote during your swing allows for curveballs, with a properly timed swing—performed just as a set of glowing rings centers on your character—adding extra heat to the ball. [/quote]
http://kotaku.com/378348/nintendo-demos-mario-super-sluggers-for-wii
They say its built on the minigame on wii sports, but with fielding included too.