Vivarium

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Vivarium (ビバリウム) is a Japanese game developer founded by former OPeNBooK9003 employees. Though they developed The Tower SP, wehther or not they bought OPeNBooK9003 is unknown (some sources say yes).

Softography

Dreamcast

• Seaman (1999)
• Christmas Seaman (1999)
• Seaman: Kindan no Pet: 2001 Nen Taiouban (2000)

Game Boy Advance

• The Tower SP (2004)