Terror of Hemasaurus is a side-scrolling arcade action platformer with local co-op in a science fiction setting. In the game you have to get used to the role of a giant monster and unleash your wrath on humanity, smashing buildings, helicopters, cars and devouring people. The Earth is on the verge of a climate catastrophe! The Church of the Holy Lizard has come up with an ominous plan to save the planet from humanity — they want to release a terrible and merciless monster.