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In the European release of Cool Spot, the 7up bottle seen in the introduction was changed to be opaque and contain an S.O.S. note. Presumably this was done to make the plastic bottle appear as a glass bottle, and remove all references to 7up, who at the time, in Europe, already had another mascot known as Fido Dido.
Contributed by Dazz
There's a hidden credit line in the SNES game's ROM which reads:
(C) 1992 Basement Boys Software

Basement Boys Software were a group famous for making hacking tools on the Commodore 64 in the late 80s, who had some members go on to Chip Level Designs, a company that used to provide sound programming for a number of SNES titles. The same credit appears in Bubsy.
Contributed by Dazz