TO World is an open-world online game that simulates an authentic theme park similar to Universal Studios or Walt Disney World. The game consists of four parks: Toshiko World, Outsider World, Hurricane Cove, and the TO World Sports Center. These parks are alongside a lake and can be accessed from each other by a monorail or a ferry. These parks are large and expansive, similar to size to an actual amusement park. Each park has different areas themed around the various game universes.
The game is a social game, allowing players to explore the theme parks with their friends and meet new people. Various mini-games can be played around the parks and the hotel, including go-karting, scavenger hunts, arcades, and various sports. Side-quests can also be performed, such as collecting certain items, talking to certain people, or helping out employees. Souvenirs can be purchased at gift shops, giving you new options for customizing the player's guest.
There are also two hotels available in the game: Toshiko World Resort Hotel and Outsider World Resort Hotel. Players will recieve a room at whichever one of the hotels they choose. Players are able to decorate their rooms how they wish using furniture and decor they purchase at giftshops. Hotels have a variety of activities and amenities, including swimming pools, bowling alleys, arcades, and more. If a player wishes to get a room at the other hotel, they must first leave the room at their current one.
One interesting mechanic is that of the Hidden T.E.D.s and Hidden Franks, similar to the Hidden Mickeys of Walt Disney World. A Hidden T.E.D./Frank is a representation of T.E.D./Frank Johnson that has been inserted subtly into the design of a ride, attraction, or other location in a theme park.
TO World technically contains a fifth park called TO Misty Falls, but it is not functional, instead resembling an abandoned theme park, with degrading rides and moss growing everywhere. The Skin Daddy can actually be seen in this area, watching the player from the surrounding forest.