Modulot is a free puzzle game available for Android 9.0 and developed by Verschueren Geert. The objective of the game is to clear the grids by selecting an empty field and adding all surrounding/adjacent numbers. The added numbers must match the given next modulus value, which is always a single digit number. If the match is valid, all cells of the addition will be cleared, and if not, the given next modulus value will be placed at the previously selected empty field. The game is based on number additions and their modulus 10 values, making it a fun and addictive way to exercise your brain.

The game features a simple and user-friendly interface, making it accessible to players of all ages. The game is challenging, and there is always a match possible, so players need to use their problem-solving skills to clear the grids. The game offers a great way to pass the time while improving your math skills. If you are looking for a fun and challenging puzzle game, Modulot is definitely worth trying out.