Found this bootleg Famicom cartridge at the flea market. What would you expect “Batman & Flash” to be? Would you expect a romhack of Monster In My Pocket? Apparently in China, the Flash wears a big jacket and is called RATPEOPLES.
As you can see from the emulator screenshots, this game wasn’t some obscure un-uploaded gem unfortunately, but it’s neat to have the actual cartridge—and Monster In My Pocket is a pretty great game anyway.