The player commands Demiru through the Ketchup Kingdom while talking to people, entering places and collecting items. The goal of the game is to save Demiru's girlfriend, Patharan, and King Abira's Ketchup Kingdom by going through each village to obtain the missing pieces of a robot that can give a third party in the Gimmick Palace, a tower-like structure with a tomato on it. Instead of endlessly wandering around places or entering random fights, Tomato Adventure displays the enemies moving on the screen.