I torched the epoxy glob on the Tiger X-Men LCD game but didn't have great results. I'll try to put it in some acid in the next couple of days. I can see the perimeter of the die, and it looks to be the same chip used in the RZone game Indy 500. I think that's one of the Sharp SM5 MCUs.

I also got Sears Auto Race, and it doesn't use the same Rockwell chip as in Mattel Auto Race; the Sears game has a glob with 28 traces coming out. I'll see if I can get it cleaned up and figure out what it is.