By Level 11, I was having to cut my point-pressing short on some screens because the layout made it too hard to conserve lives for long.
The game can get pretty challenging if you try to maximize your score the way I proposed. Unfortunately it does heat up the processor very fast, which only makes it more annoying if there's no pause feature to give it a break. This laptop with Windows XP ran the leaked game at normal speed, with only the rarest of hiccups in the action, though I believe some events in the cutscenes cued up sooner on the Disney machines.