Hi
I'm Boyan (not to be confused with Boian) and I'm the other lead designer of Surviving Mars. Now lighting and skyboxes are not something typically in the purview of the design team but I'm quite proud of what our engine developers managed to accomplish in terms of day/night simulation and lighting. I think it's best to demonstrate with a picture, so here's a shot of a sunset in Surviving Mars...
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...as well as the same spot during the day
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We have a simulation of the Martian atmosphere which allows us to create the famous Martian blue sunsets. I would say that the main inspirations for our time-of-day settings are photos from the Spirit and Curiosity rovers as well as certain shots from "The Martian". To cap things off here's a night shot with all the stars in the night sky.
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