While it has some creative puzzle games, there's not quite enough to do to carry a whole game.
This game is a loose marriage between Professor Layton and WarioWare, but definitely closer to Wario, but not quite as creative. Wario is better at entertaining kids and teens, while this OMG collection is neither fun for adults (too frenetic and lightweight) or kids (subject matter for the puzzles is too flat and boring).
There's a "story" tying the puzzles together, but it's a stretch -- you play a band of three kids exploring a haunted house, but the characters are creatively named "Red", "Green" and "Blue", and you basically learn nothing about the house or the monsters that live there, aside from seeing still images of them from time to time.
Overall, this is worth a play as a rental, or a cheap (< $10?) purchase, but don't expect more than one or two sittings worth of fun.