Similar to セブン・ビリオン・ヒューマンズ

Angels Online

Tom Clancy's EndWar

Resonance of Fate

Empire Earth (video game)

Enlisted (video game)

OMSI

Orbiter (simulator)

Otometeki Koi Kakumei Love Revo!!

Oni (video game)

Operation Flashpoint: Cold War Crisis

Operation Flashpoint: Dragon Rising

Half-Life: Opposing Force

We Without Wings