Linux

I found it fun to do amateur gamedev, for my own little enjoyment (e.g. making a super-basic FPS with a gun that shoots a thousand cubes like a shotgun, then making it shoot a thousands spheres that explode on impact like a grenade launcher). Lots of engines are accessible that you don't need to learn much/any programming skill to make something fun. You can do plenty with free assets, I never paid for anything, but if you are willing and able to pay small amounts for premade assets, then it will be even faster and easier to make something more pretty.

I've also done level design (and LoC) for some open-source FOSS games. This is easier for some games than others, but it's also rewarding. I was particularly known for making experimental or puzzle-like levels, so it was nice to get feedback from others and improve. I've mostly grown apart from games these days, but I don't regret the time I enjoyed making them.