Inspiration and lawsuitAccording to Mike Dailly who worked with DMA Design:
Dave [Jones] sort of got the idea [for the game] from Red's Dream - an old Pixar short [from 1987, an excerpt of which can be seen here], although how he translated that into a mad racing game is anyone's guess.Pixar took note of the game, and sued DMA for copying the unicycle design and concept. Mike elaborates: "The problem with Pixar was that they seemed to think that any computer generated unicycle was owned by them."Despite the speciousness of Pixar's claims, DMA lost the lawsuit, and the court ordered no further cartridges of the critically-favoured game be manufactured beyond the initial run of 300 thousand. Thwarted this escape avenue from Lemmings hell, DMA went on to cry all the way to the bank with the Grand Theft Auto series, never looking back.
NamesIn addition to swears and sexual terms, entering "SONIC", "SEGA", or "SATAN" as the name for your unicycle will also have the game tell you that it's "not cool enough" and the name will be rejected.
Information also contributed by leileilol.