I built a par 3 on Titan, Saturn’s largest moon. The air is over four times as dense as Earth’s, so a driver shot drifts backward in midair before falling forward again.

Korean golf courses send a caddie out with every group. I added one to my screen golf game: a voice that calls out distance, wind and club before each shot, and finding the right voice turned out to be the hard part.

I added a Mars course to my homemade screen golf game. With 38% gravity and almost no air, a drive rolls out to 750 m, and I birdied a 1,050 m par 4 on my second round.

I added a Moon course to my homemade screen golf game. Changing only gravity and air sent a drive 1.7 km, and tracking down a six-putt took two days.

To make course videos for all 18 holes, I took my HP Pavilion Gaming 15 from 8GB to 16GB RAM and from a 256GB to a 1TB SSD in one evening. Here is the whole process, including where I got stuck.

Skipping the expensive home simulator to build a virtual golf course, from a first ocean hole to future courses on the Moon and Mars.