Rainbow Stack, developed by donmar, is an exciting arcade game available on Android for free. The objective is to stack blocks as high as possible while facing unique challenges along the way. The game is designed to test your reflexes and concentration, with each level becoming progressively more difficult.

The game has a simple interface with colorful graphics that make it visually appealing. Rainbow Stack is easy to play and has a smooth gameplay experience. The game has a scoring system that keeps track of your progress and encourages you to beat your high score.

Overall, Rainbow Stack is a fun and challenging game that is suitable for players of all ages. It is a great way to pass the time and improve your hand-eye coordination. Download Rainbow Stack today and try to beat your high score!