Stacolor: 3D Color Hoop Sort is a free puzzle game developed by HDuo Fun Games for Android devices. The game is simple but addictive, and it offers hours of entertainment and relaxation while exercising your brain. The game is easy to understand, and the rules are simple. Players are required to sort balls of the same color onto the same pillar. The game has no time limit, and it can be played offline.

The game is operated with one finger, and it has a variety of skin themes that can be replaced. The game has massive levels with increasing difficulty, and it can be played with family and friends. The game is challenging, and players need to think strategically to complete the levels. Players can restart the level at any time, and they can also choose different styles of balls and pillars.