I dunno, Pong? Maybe something on the vextrex?
Can you people seriously remember the first time you played a videogame??
I just remember playing games on my dad's old computer, for which he had Bubbleghost and this Mickey Mouse game where you had to plan a party, and a Duck Tales adventure game. Which of those I played first, I couldn't tell you, but I assume it was Bubbleghost.
also I'm surprised at all the people born in 87 and 88 saying they played ATARI games, you know the NES would've been out for like 5 years by the time you were old enough to hold a controller, were you playing your parents ATARI or what?