These are apparently concept sketches for an upcoming game featuring Mickey Mouse for the Nintendo Wii. The game, called Epic Mickey, is being headed up by Warren Spector, who has worked previously on the decidedly un-childlike games Thief and Deus Ex. As you can see, the world being portrayed appears to be a bit dark. Much like the movie 9, this stuff would probably give little kids (a presumed target audience for the game) nightmares. I approve!
More art can be found here.