243 is described as 'game is mathematical puzzle online game'. There are more than 25 games similar to 243 for a variety of platforms, including Android, iPhone, iPad, Android Tablet and Online / Web-based. The best alternative is 2048, which is both free and Open Source. Other 243 like games are Threes! (Paid), colorszzzx (Free), numb, number & numberer (Free) and 2048 Alphabet (Free).
About the Game: "243 6x6 Game" is mathematical puzzle game with 6x6 grid. How to play: Use your arrow keys to move the tiles, or with your fingers swipe in the four directions. When three tiles with the same number touch, they can be summed up in one.
addUp is an addictive and very challenging puzzle game. It's a trivial and fun puzzle, and a fastplayed version of 2048. With colorful tiles and smooth animated tile-movement. Swipe on the screen to move the tiles left, right, up or down.