| Ippai Shimasho | r6259 | 2026-05-22 |
| Ippiki Ookami Onsen Kikou ♨: Oosaka Arima Hen | r125939 | 2026-05-20 |
| Ip~pai Amaete ne♪ ~Chiisaku Natte Yasashii Kasumi Onee-chan ni Osewa Saretsukusu Iyasare Kozukuri~ Package Edition | r25773 | 2026-05-22 |
| Iradea Academy | r152884 | 2026-05-20 |
| Irainin ~Metamorphose~ Download Edition | r95360 | 2026-05-13 |
| Iraira Yoku Bou 3 - Shiranui Hen - | r7147 | 2026-05-18 |
| Irene. The Window | r140277 | 2026-04-21 |
| Irene. The Window - Demo | r142580 | 2026-05-15 |
| Iria R ~Aru Megami no Oshigoto~ | r97022 | 2026-05-17 |
| Iridescence ~ A Charming, Seaside Epic! | r129226 | 2026-04-21 |
| Iridescent Descent | r96389 | 2026-04-21 |
| Iris | r86600 | 2026-05-20 |
| Iris | r7650 | 2026-05-18 |
| Iris | r4526 | 2026-05-18 |
| Iris - First Press Limited Edition | r10664 | 2026-05-18 |
| Iris - Regular Edition | r4525 | 2026-05-18 |
| Iris -Gousetsu no Ou- Trial Edition | r41187 | 2026-05-18 |
| Iris Dream Beta Version | r45853 | 2026-04-21 |
| Iris Odyssey - Demo | r136802 | 2026-05-20 |
| Iris School of Wizardry ~Vinculum Hearts~ | r59919 | 2026-04-21 |
| Iris The Love Game - Demo | r37404 | 2026-05-18 |
| Iris no Gyakushuu - Download Edition | r120767 | 2026-05-20 |
| Iris to Id -Ghosts in the Machine- Demo | r127865 | 2026-04-21 |
| Iris ~Kimi ga Ita Toki~ Trial Edition | r144315 | 2026-05-22 |
| Iris ~Kimi ni Magokoro o~ | r120433 | 2026-05-12 |
| Iris －イリス－ 初回限定版 | r10663 | 2026-04-21 |
| Iris －イリス－ ２８００コレクション 廉価版 | r4527 | 2026-04-21 |
| Irium | r18017 | 2026-05-14 |
| Iriya no Sora, UFO no Natsu - First Press Limited Edition | r10716 | 2026-05-19 |
| Iriya no Sora, UFO no Natsu - Regular Edition | r8970 | 2026-05-16 |
| Iriya no Sora, UFO no Natsu I&II Complete Pack | r10719 | 2026-05-20 |
| Iro Yoridori | r74028 | 2026-04-21 |
| Iro ni Ide ni keri Waga Koi wa - Download Edition | r97233 | 2026-05-19 |
| Iro ni Ide ni keri Waga Koi wa - First Press Limited Edition | r5975 | 2026-05-17 |
| Iroha ~Aki no Yuuhi ni Kagefumi o~ | r831 | 2026-05-17 |
| Irohanihoheto - Browser Edition | r81426 | 2026-05-09 |
| Irohanihoheto - Package Edition | r81427 | 2026-05-16 |
| Iroiro Kyoudan Seikatsu - Censored Steam Edition | r105000 | 2026-05-19 |
| Iroiro Yarou yo! -Momoiro Dougakan- | r94263 | 2026-05-18 |
| Iroiro ~Ingoku no Yakata~ | r61928 | 2026-05-19 |
| Irojikake Gakuen~ Shishunki Danshi Yūwaku Sakusen ~ - DL Play Box Version | r142027 | 2026-05-16 |
| Irojikake Gakuen~ Shishunki Danshi Yūwaku Sakusen ~ - Smartphone Version | r142026 | 2026-05-21 |
| Irokami | r65160 | 2026-05-15 |
| Iromonogatari Vol. 1 Hi○gi Hen - Download Edition | r54096 | 2026-05-19 |
| Iromonogatari Vol. 1 Hi○gi Hen - Package Edition | r126589 | 2026-05-18 |
| Iromonogatari Vol. 2 Tsu○sa Hen - Package Edition | r126590 | 2026-05-16 |
| Iron & Rust | r59644 | 2026-05-07 |
| Iron & Rust | r56953 | 2026-04-21 |
| Iron Company - Demo | r138351 | 2026-05-06 |
| Iron Star | r126654 | 2026-04-21 |