Hola @kevin fernandez leon The examples you mentioned are pre-defined lighting and time of day "moods" with static skyboxes and fixed object shadows. What we have is that time multiplier in the settings of a session to simulate a daily span that moves the sun according to the speed multiplier - but it's barely used, since it causes some jeggyness to the shadows and can also lead to lower frame rates. There are endless wishlists here begging for rain as well - just do a search for 'rain' here... Fog and night would imply that the cars would get functional headlights. But if I remember right, the game engine only allows for one light source - witch is the virtual sun. The cars may have flashable headlights, but they won't be able to emit actual light to illuminate the track. As for the fog, there is some... kind of... Oli