21. I first had a nintendo, was 6 or 7. Still have it somewhere, too bad it doesn't work anymore. First game was... Well what game do you think comes inserted in an old nintendo? Super Mario.
Also had duck hunts, motorbike racings, there were like 44 games in that thing *good memories*
Though the first game I played was in my cousin's spectrum, some addictive basketball game that I don't know the name of.