Please support the request for a Rodina trainer, it's a fantastic game about immersive space exploration by Elliptic Games and it's quite affordable, check it out on Steam
You can travel and land between planets (and walk them if you want) and also on asteroids that are gigantic or even small ones, it's a game in Early Access mode.
Future steps seems to be adding life to the planets, the dev is active on the project.
[Edited by gothike, 9/6/2015 12:42:17 PM]
It looks very, very unfinished, like it's gonna need at least 2-3 years to be finished.
And from the description, isn't that exactly what No Man's sky is supposed to be?
* Updated game trainers and cheats daily
* Get notified when new cheats are added
* Request which games get new trainers
* Priority support with any problem