Buttonia is a new puzzle game using Ajax developed by Neville Attard and Sven Neumann.

The game is strongly inspired from another game, Lights Out, that is played on a grid in which every square has two states: on and off. The game starts with all squares off, and your goal is to turn on every square.

There are four types of square on the grid; each type is represented by a different symbol that indicates which surrounding squares will be toggled if selected.

Four different grid sizes are available, from 3×3 to 6×6, or in other words, four levels of difficulty, from easy to very hard. It seems that puzzles are updated daily.

The current release at the time of writing is open for testing to alpha testers. User comments, ratings and top scores should be added soon, and make the experience more entertaining. In the meantime, test your logic skills with this challenging and interesting new little puzzler!

Have fun!