You have an 8x8 array of jewels of 7 types. You need to get 3 or more in a row horizontally or vertically in order to score points. You can swap any two jewels that are next to each other up and down or left and right. There is a clock shown on the left. When it counts down to 0 the game is over. This program was originally developed by David Ashley. The original distribution and sources can be found here.