6561 is described as 'Advanced form of 2048 and fun puzzle game for all ages. The gameplay is similar to 2048, but instead of merging two tiles, you must combine three! Make some high scores and share them with your friends' and is a Puzzle Game in the games category. There are more than 25 games similar to 6561 for a variety of platforms, including Android, iPhone, iPad, Android Tablet and Web-based apps. The best 6561 alternative is 2048, which is both free and Open Source. Other 6561 like games are Suika Game, 2048 by Uberspot, Zoysii and Threes!.