| Short name | Description | Year | Manufacturer | Runnable | Parent |
|---|---|---|---|---|---|
| eballdlxp1 | Eight Ball Deluxe (prototype rev. 1) | 1981 | Bally | Yes | eballdlx |
| eballdlxp2 | Eight Ball Deluxe (prototype rev. 2) | 1981 | Bally | Yes | eballdlx |
| eballdlxp3 | Eight Ball Deluxe (prototype rev. 3) | 1981 | Bally | Yes | eballdlx |
| eballdlxp4 | Eight Ball Deluxe (prototype rev. 4) | 1981 | Bally | Yes | eballdlx |
| flashgdnp1 | Flash Gordon (prototype rev. 1) | 1981 | Bally | Yes | flashgdn |
| flashgdnp2 | Flash Gordon (prototype rev. 2) | 1981 | Bally | Yes | flashgdn |