The Twilight of the Suns

In a future where the stars extinguish without scientific explanation, humanity takes refuge in a neofeudal system. After having reached the stars and conquered hundreds of worlds, technology is seen as a sacred relic or a demonic temptation, and travel between worlds depends on ancient portals whose key is guarded by a few. In the Twilight of the Suns, knowledge is sin, technology is a relic, and the only light that remains is the one bought with blood or begged with faith.