I have to say that now tanks to project Kaizo gta san Andreas is now full playable in co-op mode history with the mode he has made for PC and some consoles that I will offer that in here in a new post in this thread.
I have some files that I take from other project that you can use to make for kenka bancho 4 and 5 if you want but I was I newcomer in here and don't have links permission to post it here now wait a bit...
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I like kenka bancho 1 and 2 but my desktop doesn't have power to emulate PS2...
I may try the new ram site, and download more RAM to my Switch. Not sure if ddr3 is the right ram
for it tho. Edit- no it uses floppy Ram, just like @AncientBoi