| Short name | Description | Year | Manufacturer | Runnable | Parent |
|---|---|---|---|---|---|
| cc10 | Chess Challenger "10" (model CCX, rev. B) | 1978 | Fidelity Electronics | Yes | |
| cc10a | Chess Challenger "10" (model CCX) | 1978 | Fidelity Electronics | Yes | cc10 |
| checkc4 | Checker Challenger (model ACR, 4 levels) | 1978 | Fidelity Electronics | Yes |