what are the weirdest video game consoles

Oh yeah it's really weird. It's probably the ONLY video game system that has CPU on the cartridge rather than on the mainboard. So every game has its own CPU. The game ROM are burned inside CPU, which made it impossible to dump the game ROM unless you cut the CPU open and use good powerful microscope to read bit by bit then manually re-assemble the ROM.

 

the Gakken Compact Vision looks like a weird one

 

I bought 2 MicroVisions on ebay, they both worked although Connect 4 was too dark to see (2 different carts).