the yobo is a good clone. it played almost everything flawlessly. exceptions were castlevania 3, paperboy and bad news baseball.
but I've also heard that every system has a slightly different compatibility..
the best function of the system was being able to cut the bottom off the heavy 1985...
nice! are those record exchange stickers? that place is awesome for the random find. more recently north and south for the nes for 1$ oops
the one in Coventry is my favorite!
I think it might be shining force 2.. Its not a 2 player game per say but you and a buddy can switch off when its the next characters turn. But yeah large parties and huge battle scenes is what lead me to this conclusion.