A free program for Android, by Smartpix Games.

You can play the game in one of the three modes: Campaign, Survival, and Online.

In the Campaign mode, you will visit seven villages. To get into the next village, you must solve the jigsaw puzzle. The game will be harder and harder as you progress.

The rules are the same in all three modes.

In the Survival mode, you will be playing for yourself. You will be in control of your own destiny. You will need to survive in a hostile world. You will need to find food, shelter, and a way to protect yourself.

You will be rewarded for your achievements.

The game has its own soundtrack, with each sign having its own melody. You can even play a melody while swapping signs.