Gotcha's track - Grandpa's Sunday Drive was one of the earliest user created tracks, which I believe had a direct impact on the choice of the gameroom title 'Sunday Driving' for MTM. Of course, that could merely be a coincidence.
A close friend and one of the very first GZ guys - MOP_Cobra - had a download site and
http://www.maximumutopia.com and titled 'Maximum Overdrive' and there was an MTM1 room with that title soon after. There was a track and later a movie with the Maximum Overdrive title, but I don't think they were made at the time.
There was indeed a Tundra Tourney room, but that was a result of the Toyota and Microsoft sponsored tournament.
Of course, there was a CNR room made after me and Krystal_Ize created the Cops N Robbers gameplay.
And just when I couldn't remember a 4th gameroom, Good ol Grifter came online on ICQ. After mentioning this trivia question, he replied-
"I had a competition ladder..
Wrote the track upload and sortable database software used by me and KC (he rewrote it a year later)
ummm.. I created KC's internet gaming zone clone... etc.,. so I guess that could be considered a gamming room."
And there ya have it... Ok, Grift's game room wasnt a zone room, but close enuff until I remember a 4th...