Hiroko has done the following roles in games.

Doki Doki On Air Final [Windows]	personality
Doki Doki Poyacchio [Playstation]	Cynthia
Early Reins -Kouya no tenshitachi- [PlayStation]	Margaret Heart
Eiyuu Shigan Gal Act Heroism [Sega Saturn, Playstation]	Pricila
Fire Woman Matoigumi [PC FX]	Lemon
Grandia II [Dreamcast]	Elena
Guilty Gear XX: The Midnight Carnival [Arcade]	Bridget
Hiza no Ue no Partner [Playstation]	Kotani Kaoru
Kanon [Dreamcast]	Misaka Shiori
Kanon [PS2]	Misaka Shiori
Mahou Gakuen Lunar [Sega Saturn]	Lena
Mitsumete Knight [Playstation]	Sophia Robelingue
Mujintou Monogatari R [Win]	Sonomura Touko
Nirgends [PC FX]	Piera Mowntshine
Revive... -Sosei- [Dreamcast]	mysterious girl
Ryuuki Denshou 2 [Windows]	Melky Caring
Sonata [PlayStation]	Minamiyama Aoi
Vampire Chronicle The Choas Tower [PSP]	Riris
Vampire Savior [Arcade]	Lilith Aesland
Voice Fantasia [Playstation, Sega Saturn]	Weep
Yakusoku no Kizuna [Windows]	Kanae
Yuukyuu Gensoukyoku 3 Perpetual Blue [Dreamcast]	Sheeru Aakisu
Yuukyuu Kumikyoku Perpetual Suite -All Star Project- [Playstation]	Sheeru Aakisu
Zoku Hatsukoi Monogatari [PC FX]	Matsubara Hazuki