Marble Solitaire, developed by Grey Olltwit Educational Software, is a free puzzle game available on the Android platform. The objective of the game is to strategically move marbles across the board until only one marble remains. The game offers both 32 and 36 marble versions, providing players with different levels of difficulty to challenge their skills.

The game features an easy-to-use interface and offers a solution to both versions of the game if needed. Marble Solitaire is a great way to keep your mind sharp and test your strategic thinking abilities. With its simple yet challenging gameplay, it's a perfect game for puzzle lovers of all ages.