Cresta Clown (19??, LCD, Watch battery, Model# ?)
This is a probably a clone of Halion's Q*Bert, it looks like they've taken the Q*Bert game and just changed the LCD a little... Halion has released other games with similar designs (Q*Bert, etc). This has a very Bandai look to the shape of the case, but I'm not sure if they had anything to do with the design of it.
Do I have this? No.