Archibald's TriTris

Description
Archibald's Tritris is a single player, shareware, keyboard controlled, colour matching, falling block game played in a manner similar to Tetris.
In this game the player is supplied with a stream of falling rectangular blocks, each block consists of three coloured squares/cells. The player uses the left/right arrow keys to determine where the blocks fall and the up/down keys to cycle the order of the colours within the block. In this game blocks cannot be rotated through ninety degrees. The object is to form chains of blocks of the same colour, when three or more cells of the same colour are aligned vertically, horizontally or diagonally they disappear and the player scores points, the value of the points scored is linked to the game speed.
The game has music, a speed control and a high score table.