Showa Retro Invader Game This is an Invader game made by Epoch, released in 1979 (according to online research). It was in a very clean condition at my parents' house, so I'm putting it up for sale. No box. No power adapter, so it runs on 4 AA batteries! Operation has been confirmed. The power doesn't turn on about once every three times, but it works if you remove and reinsert the batteries. It's a portable type. It has a strong Showa retro feel. I think it's a rare item for collectors. For enthusiasts! Thank you.