I know there's "2 Player B" in the japanese version (Downtown Monogatari), but I'm hoping it'd be possible to play the english version (River City Ransom) without being able to hurt my partner.
Does such a hack exist? Is it even possible to change some code to turn friendly fire off? Can a game genie code do this? Or would it be better to instead swap the text in the japanese version for the english version's? (Thus allowing to play RCR with a save feature also)
I'd look into this myself, but I have no knowledge of hacking whatsoever. I imagine this would be a simple procedure either way though; either tinker with the code that handles damage between players, or "translate" the game using existing text from another version, so I assume I would need only minimal help.