Series

Order Up!! series

2 games

Oregon Trail series

6 games

Oreimo

2 games

Oreshika / Ore no Shikabane series

2 games

Organ Trail series

1 games

Ori

2 games

Ori and the Blind Forest series

3 games

Oriental Empires series

1 games

Ortotris series

1 games

Orwell

2 games

Orwell series

2 games

Oscar series

2 games

OshiRabu series

1 games

Osomatsu-san

1 games

Osu! Tatakae! Ouendan

3 games

Osu! Tatakae! Ouendan / Elite Beat Agents series

3 games

Other Venture series

2 games

Otherworld series

1 games

Otiiz's Adventure series

2 games

Otogi

2 games