The second image is from the game Firewatch, which was visually developed by artist Olly Moss, of Mondo poster fame. http://ollymoss.com/
This is a form of minimalism. It’s marked by strong, geometric shapes and pared-down design elements. Often, a single dominant image stands alone to deliver a powerful message.
In Moss’ work, bold, layered colors create a sense of depth and distance. The farther in the distance objects are, the more they fade into simple colors and fewer details.
Another classic example of this style is work by the designer Saul Bass.
Source : Link , Question Author : Debuginator , Answer Author : R. Lang