Rickle, the classic block surfer game, is a new addition to the hyper-casual games category. Developed by Polyworks Games, it's a free game available on Android. The game is all about stacking 3D cubes and building the highest RICKLE of stones.

The gameplay is simple and easy to understand. You have to drop stones into towering piles by tapping on the screen. The Slow, Match or Grow power-ups can be used to aim higher and beat your high score. Moreover, you can collect gems and trade them in for refills of your favorite power-ups.

What makes Rickle special is that for every ad viewed or premium purchase, the developers donate 10% of the earnings to world environmental charities. So, you can enjoy the game while contributing to a good cause.