This game is a go-to for a quick fix of fun. Easy to learn controls, just drag your finger to set power and direction as you fly to collect other ghosts and reach the gravestone. I love this kind of puzzle game, with a nice physics Angie thrown in and a fun setting to boot! A must-have, especially while it's free! I'd pay $.99 or $1.99 for this game. Which is saying a lot since I'm a broke college student ;)