Genship

Author's blurb:

Genship is a role-playing game about people living on a generation ship: A spaceship whose designed mission spans the lifetimes of many generations of its inhabitants. Each generation is in charge of keeping things going smoothly for the generations to follow, making lives for themselves and choices that may have consequences for the future of humanity. The game focuses on a few critical events that happen over the ship's lifetime. The exact nature of these events can vary wildly, including social revolutions, alien invasions, the creation of a new form of art, and whatever else the players want to create and explore.

It uses a poker chip/Chit draw system for resolution.