Outer Wilds

[Al3xand3r]

This is pretty cool, if amateur and janky.

Outer Wilds is a space exploration game that invites you to embark on a cosmic expedition into a turbulent world driven by forces beyond your control. Let curiosity be your guide as you fly into the heart of a gas giant, meet fellow travelers on quantum moons, and roast marshmallows beneath alien skies.

http://youtu.be/vRQU1o8SrAI

http://alexbeachum.com/archives/category/projects

The game is a seamless first-person experience that gives you just 20 minutes to freely explore a miniature solar system as it dynamically evolves over time. After those 20 minutes are up, the Sun goes supernova and the entire Universe ends. Fortunately, the Solar System is stuck in a time loop, and only by exploring over the course of multiple playthroughs will you come to understand the forces and secrets that drive the Universe.

A polished up remake/sequel could go places.