| Type | Title | Year | Publisher |
|---|---|---|---|
| Sega Dreamcast GD | 🟩 Christmas Seaman - Omoi o Tsutaeru Mou Hitotsu no Houhou Model T-39403M | 1999 | Vivarium [Japan] |
| Sega Dreamcast GD | 🟩 Christmas Seaman - Omoi o Tsutaeru Mou Hitotsu no Houhou Model T-39404M | 1999 | Vivarium [Japan] |
| Sega Dreamcast GD | 🟦 Seaman - Kindan no Pet - 2001-nen Taiouban Model T-39405M | 2000 | Vivarium [Japan] |
| Sega Dreamcast GD | 🟩 Seaman - Kindan no Pet Model T-39401M | 1999 | Vivarium [Japan] |