| Type | Game | Year | Publisher |
|---|---|---|---|
| PLATO soft. | Chess | 1971 | Slate & Atkin |
| CDC 6600 soft. | Chess Ver.2 | 1969 | Atkin & Gorlen & Slate |
| CDC 6600 soft. | Chess Ver.3.x | 1970 | Atkin & Gorlen & Slate |
| CDC 6600 soft. | Chess Ver.4.x | 1973 | Atkin & Slate |
| Apple II 5.25 disk | The Mind of Man Series Vol. 2: Checkers | 1982 | Odesta Soft. |