It's funny, the answer's kind of vague in my case. I had an Atari 2600, a Commodore 64, an Intellivision, and an NES, but the Game Boy was where I did most of my playing. At that time I didn't know who made what games, I was just concerned with having fun. It really wasn't until the Wii, when I got back into gaming and really got into the nuts and bolts of everything, that I really became a Nintendo fan.