Yup! I remember it so well. I even remember seeing this ad in a magazine and ordering it. I was 10 years old, and built it with my dad.
I also remember going to a home computer sale, and men with beards and long hair laughing that I was buying 1k Chess to play on my new computer.
I wish I still had mine. 3D monster maze, 1k chess, nightgunner, gulpman.
My neighbor had a zx80. I remember playing a game on that too, but i don’t remember what it was.
It was great. I was 10. I needed to be able to win once in a while, and I did.
They were laughing because they were early neckbeards. They probably had 16k of ram on their fancy BBC Micros.