In Thunder Cats Roar: Lion-O's quest, an action platformer. In this version of the old comic, you play as the titular character Lion-O. The story relies on a more episodic format that focuses on continuity. Thunder Cats Roar: Lion-O's quest was used to promote the cartoon heavily, introducing the Thundercats'adventures to the newer generation. The Thundercats leader, lively and amateurish, is prone to jumping into action without any solid plans or prior assessment. Wielding the Sword of omens, despite not knowing the true power of the sword.

How to play: Use arrow keys to control the character move and click to jump.