Fix it Felix Mega Drive Blood code.
Dra600n of AirWalk Studios released his make of Fix it Felix jr. on genesis to the public a couple months ago.
It works on the Mega Everdrive. However some times some of the sprites are missing and you have to reset the game to make them show.
Download link to the Rom
It works perfect on RetroPie.
[Marathon Mode]: Down Right A C Up Left A
[Blood Code]: A B A C A B B
[Extra Time]: A C C Right Up A Left
Blood code doesn’t work with marathon mode.