An anonymous reader writes A grandmother agreed to purchase an old building in Chiba, which is just outside of Tokyo. When her family arrived to check out the contents of the building it was discovered that the first two floors used to be a game center in the 1980s. Whoever ran it left all the cabinets behind when it closed, and it is full of classic and now highly desirable games. In total there are 55 arcade cabinets, most of which are the upright Aero Cities cabinets, but it's the game boards that they contain that's the most exciting discovery.
Donkey Kong, Street Fighter Alpha 2 (working despite the CPS2 lockout chip's tendency to kill old boards), and Metal Slug X.