Ooparts

Ooparts (有限会社オー・パーツ). Started by former Pandora Box staff, and likely headed by Katsuhiro Tongu (頓宮勝弘). [1] Also produced eroge under the Ankh, Puchi-Ankh, and Talisman brands. Declared bankruptcy on February 20, 2007. [2]

Research Methods: Shared staff, code comparisons, actual mentions

Game Boy Advance

• Sylvanian Families: Fashion Designer ni Naritai! Kurumi Risu no Onna no Ko (JP Publisher: Epoch)

Sound: Soundtech

• Sylvanian Families: Yousei no Stick to Fushigi no Ki - Maron Inu no Onna no Ko (JP Publisher: Epoch)

Sound: Studio Cliche

• Sylvanian Families 4: Meguru Kisetsu no Tapestry (JP Publisher: Epoch)

Sound: Arowana, Light Link Music

Game Boy Color

• Brave Saga: Shinshou Astaria (JP Publisher: Takara)
• Doraemon: Kimi to Pet no Monogatari (JP Publisher: Epoch)

Sound: Pentagon

• Zoids: Shirogane no Juukishin Liger Zero (JP Publisher: Tomy)

Sound: Pentagon

PlayStation

• Brave Saga 2 (JP Publisher: Takara)

Some Graphics: Studio Danburi; Sound: Studio PJ; Debugging: Pole To Win

• Simple 1500 Series Vol. 31: The Sound Novel (JP Publisher: D3 Publisher)
• Simple 1500 Series Vol. 61: The Quiz 2 (JP Publisher: D3 Publisher)

Sound: AMS

• Simple Characters 2000 Series Vol. 07: Ikkyuu-san: The Quiz (JP Publisher: Bandai)
• Simple Characters 2000 Series Vol. 16: Ganba no Bouken: The Puzzle Action (JP Publisher: Bandai)