Tell me how old you are by naming the first game system you ever had. Mine was the Atari 2600.ย 
Discussion
NES
The Super Contra cheat code is like riding a bike.
NES with Super Mario Bros. And Duck Hunt cartridge.
Apple II
Textual games (mod) on a monochrome text monitor.
Atari Lynx
SNES, but my fav was the Sega Dreamcast
SNES was the first I owned, but I grew up playing my uncles Atari 5200 and NES. Still love all those systems