Thrillville: Off the Rails for the Sony PSP is a theme park simulation game with an emphasis on roller coaster design and park management. The game blends strategy, simulation, and action genres. Players build and customize rides, attract guests, and complete missions to keep their park thriving. It also includes mini-games that represent different attractions in the park. Notable for its accessible gameplay and creative freedom in designing outlandish roller coasters, Off The Rails offers an engaging experience for both strategy enthusiasts and casual gamers looking for fun on the go.