Numbyx is a free puzzle game developed by Carmine Volpe, available on the Android platform. It is a challenging sliding puzzle that consists of a frame of numbered square tiles in random order with one tile missing. The objective of the game is to slide the tiles to rearrange them in ascending numerical order, with the empty space at the bottom right corner. The game works on all devices with all screen resolutions.

One of the unique features of Numbyx is its algorithm that excludes unsolvable combinations, ensuring that all puzzles are solvable. The game also has a realistic animation and tiles sliding, which enhances the overall gaming experience. Additionally, the game has a moves counter and timer that tracks the player's progress, making it more challenging to beat previous records. The interface is friendly, making it easy for players to navigate and play the game. It is also possible to swap two tiles during the match, adding an extra dimension of strategy to the game.

Numbyx also offers a multiplayer mode that allows players to challenge real players from all over the world. The player who completes the puzzle in the shortest time wins the match and earns a credit that can be used to challenge other players. This feature adds a competitive edge to the game, allowing players to showcase their puzzle-solving skills and become the best in the world.