Zack & Wiki : The Quest for Barbaros' Treasure.
Reasons are as follows:
I've discovered the Gobliiins games around that age, maybe a year or two older, and things that baffled the grown-ups made perfect sense to me, within that cartoon world of "ODDNESS."
Zack & Wiki will be a great present, because not only is it cartoony, pretty, cute, and fun, but because it has the very same hypnotic effect on adults as it does on kids. It's got much of what many other games lack these days, and that is, the complete and unapologetic attitude, best summarized by the Sex Pistols claim to NEVER MIND THE BOLLOCKS.
Really, get it.