Treenimation is free for all XO Laptop users. Windows users can play/create Treenimation games without charge for a 30-day trial period. After the trial period has expired, Treenimation game players must pay an annual membership fee in order to play games in multiplayer mode, and Treenimation game designers must pay the same membership fee in order to play games created by other game designers in multiplayer mode. Anyone can play games in single-computer mode or email-based mode for free, and anyone can create and play their own games in multiplayer mode for free. The annual membership fee is $15 US.
The fact that the membership fees paid by Windows users subsidizes the operation of the Treenimation game server, allowing XO Laptop users to play for free, encourages Windows users to become members. In addition to selling subscriptions, Treenimation.net will make money from advertising. In the future, Treenimation.net will become a registered charity, helping XO Laptop users in developing countries acquire literacy and numeracy skills through playing board games. The more advanced XO users will learn programming skills as well.