Yoko has done the following roles in games.

Advanced VG 2 [Playstation]	Masuda Chiho
Alice in Cyber Land [Playstation]	Alice
Arc the Lad II [Playstation]	Liza
Boys Be [Playstation]	Hanai Miki
Cross Romance [Playstation]	Harada Yayoi
Devadasy [WIN]	Wakao Ushio
Doki Doki On Air [Windows, Mac, Playstation]	guest
Doukyuusei 2 [Playstation]	Kato Minori
Doukyuusei 2 [Sega Saturn]	Kato Minori
First Kiss Story [PC FX]	Fujisawa Mai
First Kiss Story [Playstation]	Fujisawa Mai
Friends Seishun no Kagayaki [Sega Saturn]	Aoki Momoko
Guardian Recall [Playstation]	Hichiwa Keiko
Langrisser IV [Sega Saturn]	Serena
Langrisser V [Playstation]	daishikyou's daughter
Langrisser V [Playstation]	Serena Shougun (General Serena)
Lunar Silver Star Story [Sega Saturn]	Mia
Magical Date [Taito arcade]	Fuyuno Kasumi
Meguri Aisite [Playstation]	Chino Chiaki
Puchi Carat [arcade]	Shyst
Puchi Carat [arcade]	Perydot
Ryuuki Denshou 2 [Windows]	Satir
Ryuuki Denshou 2 [Windows]	Plume Malfeel
True Love Story 2 [Playstation]	Nakazato Kaori
Yuukyuu Gensoukyoku 2nd Album [Playstation, Sega Saturn]	Diana Rainey
Yuukyuu Kumikyoku Perpetual Suite -All Star Project- [Playstation]	Diana Rainey