ColorFun is a shareware version of Columns, a deviation of Tetris.
Vertical rectangle blocks fall from the top of the screen. As the blocks accumulate at the bottom, matching three or more identical colors (horizontally, vertically or diagonally) clears them from the board. The falling rate of speed increases with each level. If the stacked blocks reach the top edge of the board, the game ends.
The game includes many customization options to suit each player's taste or mood. For instance, there are selections for the number of segments in each block, block style sets, modes of play, background style and color, control keys, sounds, and difficulty level. Various bombs (for immediate block destruction) appear randomly and can be turned off entirely if desired.
ColorFun offers unique sound effects (also customizable), background music, and simple 24-bit graphics. It is controlled using a keyboard with mouse support for navigating the menus and selections. High scores are kept and can be sent to an Internet High Scores table. Games can be paused, saved and reloaded.