I’m a big fan of In the Light of the Setting Sun (here’s my modified character sheet) by Jon Davis, a Wild West hack of Tunnel Goons. It’s a rules-light system
Recently a Setting Sun Jam has been set up on itch.io to create new material for the game.
I’ve made my own supplement to the jam. It’s called Thunder Lizards of the Lost Valley. It adds dinosaurs to the frontier setting. It’s heavily influenced by the 1969 film The Valley of Gwangi.
There are several dinosaurs, new equipment, and rules for lassoing large creatures.
Here’s the itch.io page for the supplement.
Polyhedral Nonsense 