Download version 1.40 if you are a mod collector with a library of old mods or if you have a weak PC . If you just bought the game last week, do not downgrade. Play the latest version (currently 1.49/1.50 as of 2025) for the best vanilla experience.
To make this work, thousands of in-game assets—from textures to 3D materials—had to be redesigned to react correctly to the new lighting.
The standout feature of 1.40 is undoubtedly the New Visual Lighting System . This wasn't just a filter; SCS Software overhauled the entire rendering engine to use a physically-based model.