x1: Learn to solve equations is a free puzzle game that makes learning math fun and engaging. Developed by Daniel Gronau, this game is available on Android platform and falls under the category of puzzle games.

The game offers a unique and entertaining way of learning mathematical principles. In x=1, players can solve equations built with basic arithmetic operations and brackets. The game allows players to puzzle their way through equations for as long as they like until they learn the mathematical principles. Once they have mastered the principles, they can test their skills against other players to see who can solve an equation the fastest.

One of the best things about this game is that it is completely free and does not contain any annoying advertisements or in-app purchases. Although players can donate a small amount if they wish to support the developer. Overall, x1: Learn to solve equations is an excellent game for anyone who wants to learn math in a fun and engaging way.