There's a game jam that's going to end in less than a day over on itch. It's called Applied Hope: the Solarpunk & Utopias Jam. It's about creating RPG materials set in hopeful or utopian futures.

I've made my entry - Buffalo Commons. It's about park rangers flying zeppelins in the skies of the Great American Re-Wilderness!

In a post-Climate Calamity world the US Department of the Interior is slowly restoring the North American Great Plains to their wild state - prairie grasslands and buffalo herds.

Players are Prairie Recovery Officers - park rangers who patrol the vast plains in hydrogen-powered airships.

It's a hack of Jason Tocci's 2400 RPG. 2400 is a ultra-lite system with many, many hacks available. You can get the 2400 SRD as PWYW to create your own hack.

https://ng76.itch.io/buffalo-commons