Electronic Name That Tune from Castle Toy c 1980 has an NEC D557LC 513 28 DIP MCU. Kevin, can I send that to you to dump? I could decap and visually dump it, but the game is pristine and came in a nice box, so I'd rather sell it to someone who wants to collect it.
I've got a Kenner Long Beach Grand Prix coming and I picked up a Radica 20 questions for fun. It's got a blob which I'm sure covers a proprietary MCU, but it was just $2 shipped.