sorry to revive this old thread (that's why they are left open no? ) but one of my favorite marble maddness-esque games is spindizzy worlds. I see spindizzy mentioned for C64, but not spindizzy worlds for snes. afaik it is pretty easy to find online. I haven't seen any copies in stores. ( I bought it from a vhs rental place that was going out of business in the mid 90s)

do a google search for reviews and google image search for some screen shots