Before mobile phones and tablets became a hotbed of gaming on the go and a multi-billion dollar industry, handheld consoles ruled the day. Nintendo's handheld device, the Game Boy, kicked things off after it released in 1989 featuring 8bit graphics on a dot-matrix screen. The Game Boy series lasted two decades, evolving through new revisions like the Game Boy Advance, SP, and eventually giving way to the DS and 3DS systems.