Now, we know the 7 gems shown there are used to power Sonic's alternate footwear, but what about that 8th rainbow gem? The demo version has text hinting that it "Allows you to perform 'super'". In the final version, this text is replaced with "???: You'll need to buy it to see what it does!" Unfortunately, we cannot buy it, as the Rainbow Gem was removed late in game development, before its functionality was finished. However, the gem's data still exists within the game, and through hacking, it can be restored:
Unfortunately, the full functionality of the gem seems to have never been completed, possibly leading to its removal. But we can now know that Sonic Team did indeed plan to have some form of a Super Sonic mode within levels.
Back To Game Index
Back To Sonic The Hedgehog (Next Gen) Index