Even just resolution has an impact as well. I started playing Alpha Centauri now. I can tell that this game’s visuals are something I would have loved back when my eyes still worked properly and I’d be playing it on a 1024x768 crt monitor. But now on a 1080p laptop display and my poor sight even with glasses, I’m finding it strains my eyes a lot to play.

By contrast the low rez blocky NES-style visuals of civ 1 are much easier on my eyes, making one more reason this game is easier to get into.