| explorer | scramble | Explorer (bootleg of Scramble) | bootleg (Sidam) | 1981 |
| scramble | | Scramble | Konami | 1981 |
| scramblebb | scramble | Scramble (bootleg?) | bootleg? | 1981 |
| scramblebf | scramble | Scramble (Karateco, French bootleg) | bootleg (Karateco) | 1981 |
| scramblebun | scramble | Scramble (unknown bootleg) | bootleg | 1981 |
| scrambleo | scramble | Scramble (Okapi bootleg) | bootleg (Okapi) | 1981 |
| scrambler | scramble | Scramble (Reben S.A. Spanish bootleg) | bootleg (Reben S.A.) | 1981 |
| scrambles | scramble | Scramble (Stern Electronics, set 1) | Konami (Stern Electronics license) | 1981 |
| scrambles2 | scramble | Scramble (Stern Electronics, set 2) | Konami (Stern Electronics license) | 1981 |
