This is a review I've written, featuring modern examples of pixel art available via itch.io. In it, there is a bit dedicated to MANDAGON with my thoughts, praise, and critisism. If any of the other games speak to your interest, they're all free to download, about 30 min to an hour in length, and should run fine on low-spec computers.
Thanks for reading - let me know if you have any questions or suggestions for additional games/experiences
"MANDAGON presents an ambient and ancient-feeling landscape of platforms, its roots planted in mythology. The game’s music and sound design are intended to be meditative in nature, and spirits — whom you encounter — speak in short, rhyming verses."