Ryan Ding recently contacted me about his puzzle app game Lost Lands - a Treasure Hunt Puzzle Game. It's very similar to the game Turnstile from ThinkFun: http://thinkfun.com/turnstile What's different? Lost Lands has a bigger board and a whopping 168 puzzle levels.
The object is to move your man from the top left corner to the bottom right corner by swinging through some gates at the intersections. Note: the gates only move 90 degrees, so it's possible that you won't be able to push a gate.
Right now, I've done 38 of the 168 levels. I got stuck on a bunch of them, but persevered.
Here's how the game could be improved - graphically. The squares - make them smaller and make the intersections larger.
Lost Lands is a good puzzle game app. Young puzzlers will like this.