The concept of the game is to design and build a theme park that will satisfy tourists looking for a thrill. Park guests must be kept happy by use of roller coasters and race tracks, carnival rides, and games like bumper cars and arcade games. In party play mode, players can play all the minigames available against the computer or friends. The player can build facilities that would be available in amusement parks, such as bathrooms, food stalls, drink stalls, and even hat and balloon stalls. The player may also talk and interact with their guests to become friends. If using a teen character, the player may also flirt with the opposite sex. The player can play minigames to gain money, make loans, and hire staff to clean, entertain, and fix rides. Keeping park guests happy will increase publicity and money.
The game provides missions to the players, divided into five categories: upkeep, which involves taking control of staff to keep the park in working order; build, which involves building and upgrading attractions; games, which involves playing and winning games throughout the park; business, which involves managing the park's finances, advertisement campaigns, etc.; and guests, which involves interacting with the park's guests. After completing enough missions, the player is allowed to move onto another theme park.
There are five parks in total: Thrillville, Thrillville Timewarp, Thrillville Paradise, Thrillville Adventures, and Treasures of Thrillville; each park is divided into three sections with their own unique theme.