This happened to my best friend last night and pointed me to this link when he did some research. Just passing it along.
Originally posted by ArticleUnfortunately, gamers eager to sample the cel-shaded beat-'em-up were in for a very nasty surprise. That's because the demo contained a glitch that will erase all saved games on the memory card or cards currently inserted in the console.
North America - new games: - Heatseeker - Legend of the Dragon - Spider-Man 3 North America - Virtual Console: - Castlevania (NES, 1 player, 500 Wii Points) - The Legend of the Mystical Ninja (Super NES, 1-2 players, 800 Wii Points)