Thrillville is an amusement park simulator where you take on the role of Mortimer's favourite nephew or niece, taking over running of five fabulous parks when he's indisposed. Uncle Mortimer's arch nemesis Vernon Garrison is trying to knock Thrillville off the map with his Globo-Joy chain of multi-conglomerate parks and will stop at nothing to crush Thrillville like a bug and become number one. The only way to stop him is to keep the parks running smoothly, this involves keeping the guests happy and finding out their needs and wants.
Instead of crunching numbers, some daily chores have been turned into mini-games based on classic games. Using shoot-em-ups, racing games and rhythm games, mundane tasks become exciting events. You can even participate in the games available for your visitors. Instead of being a god, acting with an invisible hand from above, you control a park manager to distribute the work and interact with customers. You can even try to befriend customers through conversations to keep them happy.