Several that come to mind from my childhood and young adulthood:
Intellivision -
Football, Baseball, Basketball, Shark! Shark!
Colecovision -
Ladybug, Mr. Do!
Atari 8bit -
Necromancer, Boulderdash, Drol, Jumpman, Lode Runner, Ball Blazer, Blue Max
Apple II -
Ringside Seat, Wizardry I, Ultima 2-4, Temple of Apshai, Karateka, Bruce Lee, Choplifter, Aztec, Dino Eggs
Commodore 64 -
Summer Games
PC -
Wing Commander I, Ultima VII: The Black Gate
I had a 7 year older brother who bought nearly every home computer/gaming system that came out in the 1980s, so I was exposed to a lot of games even if I couldn't play them that often. He was big into Atari 8/16 bit and Amiga while I was in high school. I had a buddy in 7th grade with a C64 and I LOVED Summer Games on that platform. It's the main game I remember enjoying when I'd go to his house.
I didn't get my first PC til my final year at university in 1991, so the two Origin games I listed were the first two I ever played on the platform.