Walkabout is one of those puzzles where you are supposed tn single-path (without cross-over your own path) while collecting "stars". Presented in a very kiddie fashion (think MySims, young kids version), this game is clearly aimed at a very young audience.
There really isn't much to this game other than 72 levels to try (in the full version).
Rating: Try it, but I'd be bored very quickly
Free: http://www.appbrain.com/app/walkabout-lite/com.base2.walkaboutdemo
Paid: http://www.appbrain.com/app/walkabout/com.base2.walkaboutb