Intellivision back in 1980. Even bought a 2nd one after wearing out the shitty controllers.
My parents wouldn't fuel the "addiction" that they believed video games were back in the day, so every game and system I've ever owned were purchased with my own funding. The first of these was a Gameboy. I mowed yards all summer as well as worked at a restaurant as a busboy under the table to be able to save up that coveted $99.
My man