From the outside cover of this SEGA Mega Drive version of Tetris, it looks pretty normal looking but this is in fact the rarest video game on the planet.
Only 3-8 copies exist in the world. The unit is the only signed cartridge by the creator of Tetris, Aleksei Pazhitnov. This is a truly, rare and exclusive collectors piece. It’s currently on Ebay for US £1 million dollars. Still interested?