I've made a mobile puzzle game called Holls. The goal is to find the treasure on each map, which can be quite a challenge. That's because the rules how to locate the treasure aren't introduced in clear tutorials. You learn by playing.

It's not the easiest of games. My friends who enjoy abstract puzzles did like Holls, but some of them didn't quite get it. Give it a try.

Android: https://play.google.com/store/apps/details?id=com.Hollding.Holls
iOS: https://itunes.apple.com/app/id1293996886

Here's two promocodes for iOS (contact me if you need one):
LTTPL73KHN7H
YLN9FMY69WPA