| Gaku Ou - The Royal Seven Stars +Meteor | 2013 | psp |
| Gakuen Club - Himitsu no Nightclub | 2017 | vita |
| Gakuen Heaven - Boy's Love Scramble! | 2015 | vita |
| Gakuen Heaven 2 - Double Scramble | 2015 | vita |
| Gakuen K - Wonderful School Days | 2014 | psp |
| Gakuen K - Wonderful School Days V Edition | 2015 | vita |
| Gakusen Toshi Asterisk Festa - Houka Kenran | | vita |
| Gal Gun Returns | 2021 | switch |
| Galtia V Edition | 2018 | vita |
| Game Demo, Papa no Iu Koto o Kikinasai! | | psp |
| Gamebook DS - Aquarian Age - Perpetual Period | 2004 | nds |
| Gamebook DS - Koukaku no Regios | 2004 | nds |
| Gamebook DS - Sword World 2.0 | 2009 | nds |
| Gensō Rōgoku no Kaleidoscope | 2020 | ps4, switch, vita |
| Geten no Hana | 2013 | psp |
| Geten no Hana - Yume Akari | 2014 | psp |
| Getsuei Gakuen - Kou | 2013 | vita |
| Getsuei no Kusari - Sakuran Paranoia | 2013 | psp |
| Getsuei no Kusari - Sakuran Paranoia | 2015 | vita |
| Ginga Ojousama Densetsu Yuna Remix | 1996 | saturn |
| Glass Heart Princess | 2012 | psp |
| Glass Heart Princess - Platinum | 2013 | psp |
| Gnosia | 2019 | switch, vita |
| Goes! | 2015 | vita |
| Golden Time - Vivid Memories | 2014 | vita |
| Golgo 13 | 1992 | cdi |
| Golgo 13 Vol. 1 - Carlyle no Yabou | 1998 | ps1 |
| Golgo 13 Vol. 2 - Mienai Guntai | 1998 | ps1 |
| Gothic Murder: Adventure That Changes Destiny | 2020 | ps4, switch |
| Grimm Meisaku Gekijou Vol. 1 - Bremen no Ongakutai | 1994 | 3do |
| Grimm Meisaku Gekijou Vol. 2 - Hansel to Gretel | 1994 | 3do |
| Grimm Meisaku Gekijou Vol. 3 - Akazukin | 1994 | 3do |
| Grisaia Phantom Trigger 01 & 02 | 2017 | vita |
| The Grisaia Trilogy | 2019 | switch |
| Grisaia no Kajitsu - Side Episode | 2017 | vita |
| Grisaia no Kajitsu Spinout! - Idol Mahou Shoujo ChiruChiru Michiru | 2015 | vita |
| Grisaia no Meikyuu - Le Labyrinthe de la Grisaia | 2014 | psp, vita |
| Grisaia no Rakuen - Le Eden de la Grisaia | 2014 | psp |
| Grisaia no Rakuen - Le Eden de la Grisaia | 2014 | vita |
| Gunka o Haita Neko | 2019 | switch, vita |
| Gyakuten Saiban 4 | 2017 | 3ds |
| Gyakuten Saiban 6 | 2016 | 3ds |
| Hakuoki - Edo Blossoms | 2018 | vita |
| Hakuoki - Kyoto Winds | 2017 | vita |
| Hakuouki - Reimeiroku Nagorigusa | 2012 | ps3 |
| Hakuouki DS | 2010 | nds |
| Hamidashi Creative | 2021 | ps4 |
| Hana Yori Dango - Koi Seyo Otome! | 2008 | nds |
| Hanaoni - Yume no Tsuzuki | | psp |
| Hanasaki Work Spring! | 2017 | vita |
| Hanasaku Manimani | 2013 | ps3, psp, vita |
| Hanayaka Nari Waga Ichizoku Modern Nostalgie | 2015 | vita |
| Hanayamata - Yosakoi Live! | 2014 | vita |
| Happy Breeding - Cheerful Party | 2003 | dreamcast, ps2 |
| Happy Lesson - First Lesson | 2000 | dreamcast |
| Harem Tengoku da to Omottara Yandere Jigoku Datta | 2014 | ps3 |
| Harukanaru Toki no Naka de - Hachiyoushou | 2013 | psp |
| Harukanaru Toki no Naka de 3 Ultimate | 2017 | vita |
| Harukanaru Toki no Naka de 6 | 2015 | psp, vita |
| Harukanaru Toki no Naka de Ultimate | 2018 | vita |
| Haruoto Alice & Gram - Snow Drop | 2017 | vita |
| Harvest OverRay | 2015 | vita |
| Hashihime of the Old Book Town Append | 2021 | switch |
| Hatoful Boyfriend | 2015 | ps4 |
| Hatoful Boyfriend - Holiday Star | 2015 | vita |
| Hatsujou Sprinkle | 2017 | vita |
| Hatsukare - Renai Debut Sengen! | 2013 | psp |
| Hatsuyuki Sakura | 2017 | vita |
| Heart no Kuni no Alice - Wonderful Twin World | 2013 | psp |
| Heart of the Woods | 2021 | switch |
| Heiligenstadt no Uta | 2017 | vita |
| Hello Lady! Superior Dynamis | 2018 | vita |
| Hentai Ouji to Warawanai Neko | 2013 | psp |
| Higurashi no Naku Koro ni Hou | 2018 | switch |
| Higurashi no Naku Koro ni Kizuna I | 2008 | nds |
| Higurashi no Naku Koro ni Kizuna II - Dainikan - Sou | 2008 | nds |
| Higurashi no Naku Koro ni Kizuna III - Daisankan - Rasen | 2009 | nds |
| Higurashi no Naku Koro ni Kizuna IV - Daiyonkan - Kizuna | 2010 | nds |
| Higurashi no Naku Koro ni Sui | 2015 | ps3 |
| Hiiro no Kakera - Ano Sora no Shita de | 2007 | ps2 |
| Hiiro no Kakera - Omoi Iro no Kioku | 2017 | vita |
| Hiiro no Kakera - Shin Tamayori-hime Denshou Portable | 2010 | psp |
| Hiiro no Kakera DS | 2008 | nds |
| Himawari - Pebble in the Sky | 2015 | vita |
| Himitsu - Yui ga Ita Natsu | 2001 | dreamcast |
| Himitsu Sentai Metamor V | 1998 | saturn |
| Himitsu no Hanazono | 1993 | pcengine |
| Hirata Shougo Interactive Ehon - Aesop Monogatari Vol. 1 | 1994 | 3do |
| Hirata Shougo Interactive Ehon - Cinderella | 1995 | 3do |
| Hirata Shougo Interactive Ehon - Ningyo-hime | 1994 | 3do |
| Hirata Shougo Interactive Ehon - Sanbiki no Kobuta | 1994 | 3do |
| Hirata Shougo Interactive Ehon - Shirayuki-hime | 1994 | 3do |
| Honey Vibes | 2024 | switch |
| Hoshi Ori Yume Mirai - Converted Edition | 2016 | vita |
| Hoshizora no Comic Garden | 2008 | nds |
| Hotchkiss | 2013 | vita |
| Houkago Colorful-Step - Bunkabu! | 2014 | psp |
| The House in Fata Morgana | 2019 | vita |
| The House in Fata Morgana: Dream of the Revenants Edition | 2019 | ps4 |
| How To Take Off Your Mask Remastered | 2021 | ps4, switch, xboxone |