Longevity is a tricky question. There are only 18 levels and besides the chance to replay them to find the timeclocks that unlock bonuses like concept sketches and animated sequences (fascinating stuff though, well worth seeing), there is little to bring you back to a level once it is done except to revel again in the silliness. However, the game itself is quite challenging first time through. I made the mistake of looking at the bright, simple graphics and assuming it was aimed at kids. But after the first few levels I was really scratching my head and trying to figure out the puzzles, which were becoming quite labyrinthine in their complexity. Unless you are more of a puzzle genius than I am, you’ll probably spend quite a few hours beating this game, it’s still worth seeking out as an example of one of the better games released in the twilight PSOne era. It’s a fabulously, fun slice of cartoon puzzling and contains the best sheep ever seen in a videogame. What more could you want?