Smart Cookies v. 2.0.1 is a mind-bending game: you want to empty a box of cookies by taking connected groups of the same colour. You can also make the cookies slide along one of the three diagonals of the box to form bigger groups. You have options for the box size, the number of colours used, random arrivals of new cookies and different scoring methods (ex. bonus if at the last taking move all the corners are empty). The HELP menu gives a more detailed description of the options.
Requirements: no color, no screen size, System 7 only for one type of random arrival out of three (which will deactivate on previous systems). Seemed to work fine on an SE30 / System 6.0.4 .