| title | developer | year | platform | | pop. |
|---|
| Yagai Gakushuu | Completes | 2005 | Windows | adventure Manga | image | subject | label | |
| Yagai Gakushuu 2 | Complet's | 2012 | Windows | adventure | image | | label | |
| Yagai Gakushuu 3 | Complet's | 2013 | Windows | adventure | image | | label | |
| Yakusoku ~ Promise | May-Be Soft | 1997 | NEC PC9801 | adventure Manga | image | | label | |
| Yami no Kanata | CALIGULA | 2006 | Windows | adventure Manga | image | | label | |
| Yami no Koe | Black Cyc | 2001 | Windows | adventure | image | | label | |
| Yami no Koe Ibunroku | Black Cyc | 2005 | Windows | adventure | image | | label | |
| Yami no Koe II | Black Cyc | 2002 | Windows | adventure | image | | label | |
| Yami no Koe III ~Gobou San'yoku Mahoujin~ | Black Cyc | 2003 | Windows | adventure | image | | label | |
| Yami no Koe Zero | Black Cyc | 2008 | Windows | adventure | image | | label | |
| Yandere Simulator | author | 2015 | Linux | simulation adventure | | | label | |
| Yaoi Story | author | 2010 | Linux | adventure | | | label | |
| Yarisugi! Katei Kyoushi no Onee-san | Dieselmine | 2007 | Windows | adventure | image | | label | |
| Yarudora Portable: Kisetsu o Dakishimete | Sony Computer Entertainment | 2005 | PSP | adventure | image | | label | |
| Yarudora Series Vol. 2: Kisetsu o Dakishimete | Sugar & Rockets;Production I.G;Japan Studio | 1998 | PS | adventure | image | subject | label | |
| Yaruge Girl Triona | DaFool | 2008 | Linux | simulation | | | label | |
| Yes! - Youthful Eager Stories | Himeya Soft | 1993 | NEC PC9801 | adventure | image | | label | |
| Yesterday's Dream | PunkCabbageRabbit | 2012 | Linux | adventure | | subject | label | |
| Yobidashi! Subject ~Osananajimi Ane ga Hoken'i~ | Soft Circle Courreges | 2005 | Windows | adventure | image | | label | |
| Yokubou ~Shokushu no Amai Wana~ | Gyuunyuu Soft | 2005 | Windows | adventure | image | | label | |
| Yoojuu Kyooshitsu | Dez Climax | 1994 | NEC PC9801 | adventure Manga | image | | label | |
| Young Earth Road Trip | saguaro | 2012 | Linux | adventure | | | label | |
| Young Earth Road Trip | Lucky Special Games | 2012 | Windows | adventure | image | | label | |
| Your Dry Delight | Argent Games | 2018 | Linux | adventure | | | label | |
| Your Gift | Shirara Imaginations | 2016 | Linux | adventure | | | label | |
| Your Swimsuit Jumped Over Its Own Weathercock, You Liar! | author | 2013 | Linux | adventure | | | label | |
| Yousei | SakeVisual | 2012 | Linux | adventure | | | label | |
| Yowami o Nigitte Hitozuma to Sono Musume o Pakottemita. | Parthenon | 2014 | Windows | adventure | image | | label | |
| Yu-No: A Girl Who Chants Love At The Bound Of This World | Elf | 2000 | Windows | adventure Manga | image | | label | |
| Yukinko Burning | Princess Soft | 2002 | PS | adventure Manga | image | | label | |
| Yume no Sei | 13cm | 1996 | NEC PC9801 | adventure Manga | image | | label | |
| Yume wo Mita | Arctix Circuit | 2010 | Linux | adventure | | | label | |
| Yume-Iroiro | Feathered | 1998 | PS | adventure | image | subject | label | |
| Yumemizaka | U-Me Soft | 1995 | NEC PC9801 | adventure Manga | image | | label | |
| Yuri Killer In'yoku ni Ochiru Yuri-tachi | Atelier Kaguya CheshireCat | 2015 | Windows | adventure | image | | label | |
| Yuri no Yume | Tentacular Industries | 2007 | Linux | adventure Cartoon | | | label | |
| Yuri no Yume Episode 2 | Tentacular Industries | 2008 | Linux | adventure Cartoon | | | label | |
| Yuukuri Panic Escalation | Rolling Star | 2008 | Windows | adventure puzzle | image | | label | |
| Yuukuri Panic Lolipara! | Shining Star | 2008 | Windows | adventure | image | | label | |
