Toy and Moon were two planned environments that were alledgedly developed by Nadeo to be released in TrackMania United Forever, but have been cancelled.
Interestingly enough, unused surface IDs have remained in ManiaPlanet files, confirming that the Toy environment may have existed at one point. There is still uncertainty surrounding the existence of Moon being in development.
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"GolfBall", an unused surface ID in ManiaPlanet that may have been designed for Toy. What a TMUF surface ID doing in ManiaPlanet is unknown.