Spike Bug

The Spike Bug is a glitch that occurs in Sonic The Hedgehog for the Sega Mega Drive. If the player lands on spikes they will then lose all their rings and a life. (If they currently have a shield, that will be lost first, then their rings, and a life.) Many consider this a bug as the later Sonic games don't have this issue, and it was also addressed in Rev. 01 of the game. Since Sonic The Hedgehog is hacked excessively, one can fix the issue in a revision 00 ROM by means of a disassembly.