| Bishoujo Hanafuda Kikou - Michinoku Hitou Koi Monogatari Special | Sega Saturn |
JP | 1997-12-11 | published |
| Michinoku Hitou Koi Monogatari Kai | PlayStation |
JP | 1999-12-22 | published |
| Kuon no Kizuna - Sairinshou | Dreamcast |
JP | 2000-05-18 | published, developed |
| Fuuraiki | PlayStation |
JP | 2001-01-18 | published |
| Missing Parts - The Tantei Stories | Dreamcast |
JP | 2002-01-17 | published |
| Missing Parts 2 - The Tantei Stories | Dreamcast |
JP | 2002-10-24 | published, developed |
| Missing Parts 3 - The Tantei Stories | Dreamcast |
JP | 2003-07-31 | published, developed |
| Missing Parts Side A - The Tantei Stories | PlayStation 2 |
JP | 2003-11 | published |
| Rim Runners | PlayStation 2 |
JP | 2005-01 | published, developed |
| Amagoushi no Yakata | PlayStation 2 |
JP | 2007-03 | developed |
| Kuon no Kizuna - Sairinshou | PlayStation 2 |
JP | 2007-06 | published, developed |
| Missing Parts Side B - The Tantei Stories | PlayStation 2 |
JP | 2007-06 | published |
| Amagoushi no Yakata - Ichiyanagi Nagomu, Saisho no Junan | PlayStation 2 |
JP | 2008-03 | developed |
| Naraku no Shiro - Ichiyanagi Nagomu, 2-dome no Junan | PlayStation 2 |
JP | 2008-03 | developed |
| Fuuraiki | PlayStation 2 |
JP | 2008-04 | published, developed |
| Fuuraiki 2 | PlayStation 2 |
JP | 2008-04 | published, developed |
| Amagoushi no Yakata Portable - Ichiyanagi Nagomu, Saisho no Junan | PlayStation Portable |
JP | 2009-09 | developed |
| Missing Parts the Tantei Stories Complete | PlayStation Portable |
JP | 2012-11-29 | developed |
| Fuuraiki 3 | PlayStation Vita |
JP | 2015-02-19 | developed |
| Fuuraiki 4 | PlayStation 4 |
JP | 2021-07-08 | developed |