Toad Town Private Servers (usually just called a TTPS) are unofficial copies of the Toad Town Online game that have not been endorsed by Approach Software or Nintendo. Because they can not use the regular TTO server, they use alternative code usually written in PHP. Usually, these servers have free membership, perks such as nameglow, commands and custom items or rooms. Many of the restrictions placed by the canonical game are usually removed (such as the chat filter).
The legality of TTO private servers have been called into question by many players. While the server software itself is legal, most servers' client files violate copyright as they are usually from TTO. Some DMCAs have been sent by Nintendo to web hosts hosting TTO content.