Same era, I used to playing games on my calculator. I suppose you still can, but I used to do it. I remember I had RISK on my TI-89, but the games on my TI-82 were on par with the version of snake shown in the post. We would even trade the games around with the kids that didn't have a computer and/or Internet at home. We'd connect them with funky little cables that looked like audio jacks.