What Sega game is this please?

Hi, I got around to some sorting today and found this board and not sure what game it is:

Think I have my work cut out as got through 5 out of 26 tubs, just making a list of whats in each one, plus have a good few boxes of boards too

These are tubs of untested / faulty duplicate games, think I might have a problem, thankfully none of this is at my home, so get to pretend everything is ok.

Only started through them as looking for where I have put a faulty CPS3 board that I think had some memory sims still in it, as yet no joy

Cool thanks, did not think to google number

Need to buy a jamma adapter as got wonderboy, choplifter and up n down in same tub, guess use the same converter.

Your original PCB pictured at the start of this thread is unlikely to be Wonderboy (2) in Monsterland. The reason for this is that Monsterland usually has a larger sub-pcb containing the extra game and graphics data which takes up a large portion of the pcb (incorrectly described as Sega System 2 sometimes).

You'll notice the bootleg is stupidly massive in comparison!

The small sub-pcbs you have there are just an unravelled custom and to allow some larger standard program ROMS to be used on the very early Sega System 1 variant (1983) PCB.

The way to tell without a Sega System 1 -> Jamma adaptor is basically to dump one of the Eproms.