Type Stack is a free puzzle game available on the Android platform. Developed by Alexandra Bykova, this game challenges players to stack different shapes and objects in a limited space.

The game consists of various levels, each with a different layout and set of objects to stack. The player must use their problem-solving skills to figure out the best way to stack the objects without any of them falling off. The game also includes a time limit, adding an extra layer of difficulty to the gameplay.

Overall, Type Stack is an entertaining and challenging puzzle game with simple yet addictive gameplay. It's a great choice for anyone looking for a fun way to pass the time and exercise their brainpower.