SpaceEngine is a 1:1 scale universe simulator where you can explore everything in our solar system and beyond. The game has a spacecraft that follows Newtonian physics allowing you to travel anywhere in the universe. Each planet has 3D procedural generated terrain, which means nothing is off-limits in this game. If you can see it, you can explore it in breathtaking detail.
A fun feature of the game is the ability to speed up time to experience the behavior of the cosmos millions of years in the future. Plus, SpaceEngine has a highly active modding community that has recreated spacecraft from popular Sci-Fi franchises.