Elemental Gimmick Gear is a role-playing game developed by Birthday and released on Dreamcast.

Daikaijyuu Monogatari: Miracle of the Zone II is a strategy game developed by Birthday and released on Game Boy.

Daikaijyuu Monogatari: Miracle of the Zone is a strategy game developed by Birthday and released on Game Boy.

Daikaijyuu Monogatari II is a role-playing game developed by Birthday and released on Super Nintendo Entertainment System.

Daikaijyuu Monogatari is a role-playing game developed by Birthday and released on Super Nintendo Entertainment System.

Dream Master is a role-playing game developed by Birthday and released on Nintendo Entertainment System.

Peke to Poko no Daruman Busters is an action game developed by Birthday and released on Game Boy.

Juvei Quest is a role-playing game developed by Birthday and released on Nintendo Entertainment System.

Kaijuu Monogatari is a role-playing game developed by Birthday and released on Nintendo Entertainment System.