· Several early units were shipped with "@!#?@!" on the marquee instead of "Q*bert".
· A harder version was programmed, titled Faster Harder More Challenging Q*bert, but it never went into production and no dedicated cabinets are known to exist.
· A special Mello Yellow version exists (picture #1), along with a 7-11 version (pictures #2 and #3).
· RUMOR: Some players state that the reserve lives counter rolls over at 255 (back to 0); others say 256. Does anyone know for sure?