I went through my Wishlist (about 15 games) and trimmed it down to five on both Steam and GOG (I don't do Epic because it's my least favorite of the three stores).

The Caribbean Sail ($15 regular, $3.75 at 75% off) - Mostly 2-bit 1980's-looking game of pirate adventure. This is the only non-Mac game on my list.

World of Horror ($20 regular, $15 at 25% off on GOG) - 2-bit first person modern-RPG horror game. Both this and Caribbean Sail appeal to me because of the Mac Plus retro graphics.

ΔV: Rings of Saturn ($10 regular, $5.60 at 44% off on Steam) - top down solar system simulator with realistic physics where you run a mining ship.

Cave of Qud ($30 regular, $24 at 20% off on Steam) - science fantasy rogue-like with retro 1980's color-PC graphics.

Nox Archaist Game Bundle ($23, $2.30 at 90% off on GOG) - Retro Ultima 1-3 looking game. You can't Wishlist bundles on Steam -- you can on GOG because a bundle is a separate game entry.

So four retro-graphics games and one that's more modern but still simpler graphics.