| Spectral Force | 1997 | — | — |
| Steady×Study | March 25, 2004 | Idea Factory | — |
| Mars of Destruction | May 26, 2005 | Idea Factory | — |
| Rebirth Moon | November 24, 2005 | Idea Factory | — |
| Hiiro no Kakera: Ano Sora no Shita de | February 15, 2007 | Otomate, Design Factory | Hiiro no Kakera |
| Hisui no Shizuku: Hiiro no Kakera 2 | August 9, 2007 | Otomate, Design Factory | Hiiro no Kakera |
| Osouji Sentai Clean Keeper | April 24, 2008 | Lupinus, Idea Factory | — |
| Hiiro no Kakera | December 18, 2008 | Otomate, Design Factory | Hiiro no Kakera |
| Armen Noir | December 9, 2009 | — | — |
| Soukoku no Kusabi: Hiiro no Kakera 3 | April 15, 2010 | Design Factory | Hiiro no Kakera |
| Desert Kingdom | May 27, 2010 | Otomate | — |
| Moujuutsukai to Ouji-sama | June 24, 2010 | Otomate, Design Factory | — |
| Clock Zero: Shūen no Ichibyō | November 25, 2010 | Otomate | — |
| Hiiro no Kakera: Shin Tamayori Hime Denshou - Piece of Future | July 14, 2011 | Otomate, Design Factory | Hiiro no Kakera |
| Kaminaru Kimi to | October 20, 2011 | Design Factory | — |
| Angelique Maren no Rokukishi | November 17, 2011 | Koei Tecmo Holdings | Angelique |
| Soukoku no Kusabi: Hiiro no Kakera 3 - Asu e no Tobira | May 31, 2012 | Otomate, Design Factory | Hiiro no Kakera |
| Sweet Fuse: At Your Side | June 14, 2012 | Otomate, Idea Factory | — |
| Shirahana no Ori: Hiiro no Kakera 4 | September 20, 2012 | Otomate, Design Factory | Hiiro no Kakera |
| Diabolik Lovers: Haunted Dark Bridal | October 11, 2012 | Rejet | Diabolik Lovers |
| Koibana Days | June 20, 2013 | Otomate | — |
| Shirahana no Ori: Hiiro no Kakera 4 - Shiki no Uta | September 5, 2013 | Otomate, Design Factory | Hiiro no Kakera |
| Diabolik Lovers: Vandead Carnival | December 4, 2014 | Rejet | Diabolik Lovers |
| Diabolik Lovers: Dark Fate | February 26, 2015 | Rejet | Diabolik Lovers |
| Diabolik Lovers: Lunatic Parade | February 25, 2016 | Rejet | Diabolik Lovers |
| Brothers Conflict: Precious Baby | April 7, 2016 | Otomate, Idea Factory | — |
| Mary Skelter: Nightmares | October 13, 2016 | — | — |
| Diabolik Lovers: Lost Eden | February 16, 2017 | Rejet | Diabolik Lovers |
| Code: Realize ~Wintertide Miracles~ | December 21, 2017 | Design Factory | — |
| Piofiore: Fated Memories | 2018 | Otomate | — |
| Diabolik Lovers: Chaos Lineage | March 28, 2019 | Rejet | Diabolik Lovers |
| Super Neptunia RPG | June 20, 2019 | Artisan Studios, Idea Factory | Hyperdimension Neptunia |
| Café Enchanté | October 10, 2019 | Design Factory | — |
| Dairoku: Agents of Sakuratani | May 28, 2020 | — | — |
| Cupid Parasite | August 20, 2020 | Idea Factory, Studio Saizensen | — |
| Neptunia ReVerse | June 8, 2021 | — | Hyperdimension Neptunia |
| Winter's Wish: Spirits of Edo | July 29, 2021 | Otomate | — |
| Neptunia x Senran Kagura: Ninja Wars | September 16, 2021 | Acquire, Tamsoft | Hyperdimension Neptunia, Senran Kagura |
| Shūen no Virche | October 7, 2021 | Otomate | — |
| Neptunia Game Maker R:Evolution | May 14, 2024 | — | Hyperdimension Neptunia |