Shift Gear is a free puzzle game developed by Rollic Games for Android devices. The game is all about turning and shifting gears to make them all match the same color. The gameplay is simple and easy to understand, but it gets progressively challenging as you advance through the levels.

The game features over 200 levels, each with a unique design and layout. The levels are divided into different worlds, and each world has its own set of challenges. The game also features different types of gears, each with its own color and shape. You can unlock new gears as you progress through the game, adding to the challenge and variety.

Overall, Shift Gear is a fun and addictive puzzle game that is perfect for casual gamers looking for a quick and challenging fix. The game's simple yet challenging gameplay, combined with its colorful and engaging graphics, make it a must-try for puzzle game fans.