I’m a big fan of the work of China Mieville. His stories are highly imaginative, and like nothing I have ever read before. Here’s an attempt by one fan to create an RPG background based on his New Crobuzon setting.
Hulks and Horrors is an RPG about exploring the dark reaches of space for riches. It’s a pay-what-you-want product.
Fudge is a free — and free to adapt — rules-light RPG that has been ported to a great many settings. At the link below, you’ll find FUDGE (Freeform Universal Donated Gaming Engine) Fantasy rules.
Free Elements LITE is a starter version of a more complex RPG where, according to the author:
This system utilizes the Elements TTRPG system, which is a freeform action system. You perform actions by describing what you want to do, and picking a skill to use. Based on that skill’s rank, check your multiplier table to see how many points it has. All checks require skill rolls from both parties to determine the success rate, regardless of what the target may be, you’ll engage in a battle of skill checks with it. If you don’t have the proper skill, you must perform an untrained skill check with it. Rate of success when performing an action determines the outcome of a battle, if successful enough the DM will allow you to describe the outcome, where if you’re within 9pts of each other’s checks the DM will describe what happens instead.
Wendy’s — yes, the fast food chain — has released an RPG free for the downloading: Feast of Legends. From the description:
You are adventurers in the realm of Beef ’s Keep, where the nations have been splintered over major disagreements in how to treat the realm’s people. Creepingvale and the United Clown Nations have led their people into a collective darkness known as The Deep Freeze. While the world currently feels like a cold and desolate place, you reside in the one nation that remains a true beacon of hope: Freshtovia.
Creepingvale has a creepy king with a paper crown …