I always recommend this "game" for those aspiring to understand more about the univese and who wants a "universal simulator" to explore and understand most of the principles of physics, gravity and others relative subjects

It´s a good way to start, it's available at STEAM STORE, a traditional games store of Earth.

Here is the linik: http://store.steampowered.com/app/230290/

here's is a video that i made with the program about the prophecies of Second Sun and what would happened if a Second Sun appears in the Sky...https://www.youtube.com/watch?v=7yi1UkG2BCI

Mod Edit This post has been moved from General Discussion to Off Topic. Jewell Ledoux, 19/01/2017, 10:42pm