Awesome a question I know the answer too(and probably only me on this site!) I bought this game I have a 3yr. old son, and a 4yr. old daughter. There a bunch of gameplay elements where you have to use the pointer to click the A Button on an object and move it to another location. The smallest objects to click on so far during one of the minigames are blocks that are about 1" by 2" on screen(that would be on a 39" WS Tv.) Although moving about the spaceship there are smaller object you can click on in the background, most of which isn't required, they usually play a silly mini cartoon. My kids have been enjoying it. Many of the games though do have bigger areas to click on, and just about all except for a few(that I've seen) don't have a time limit, so he can take his time clicking on items. If he can do one of those things where you have to move the Wii-mote over letters to type in your name he can definitly play this game. my 4yr old daughter playing with both hands could mostly manage, although my 3yr old needs my help.
As far as his visual perception goes, they will require you to put a puzzles together. Sometimes he'll have to find something on the screen like a clock on the wall that is perhaps 3/4" by 3/4" that's the smallest thing I can recall. Parts of the screens are a bit busy, but it's pretty vivid, if he doesn't have trouble finding things on the screen during a Nickeldon cartoon per say he should have to much trouble with this.
One draw back though is that he's older, I noticed the puzzle in easy mode was good for my kids, it had 4 giant pieces, then they had six smaller pieces, so perhaps for an older kids it could potentially have even smaller pieces for the puzzle part of the game anyway. Again if he could manage making Miis though, I think the game would be in his range. I think anyway, I hate to say what people should do.
