Hi! for some reasons, Im not able to create a post, so i'll ask it here. Am I the only one using SpaceEngine for role play games?
No, you are not the only one - and there is no need to make a whole new thread to express this dedication - we have one here:
Using SE for a D&D Campaign? If you aren't playing Spelljammer-esque Dungeons and Dragons, then that thread should still serve.
I have GM'd and played the old '80s Star Trek RPG, the Western Games Star Wars RPGs and Fantasy Flight's Warhammer 40k RPG series all with SE for mapping and visualizations. More recently, I am playing through a campaign with the new
Dragonstar game using SE 0980 for navigational purposes and 'random' encounters. Sometimes I think it's sort of lazy just to let the program come up with the solar-systems and such, but it is still great fun

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I've also got a question about the 0.990. Will it be possible to have something like two ''profiles'' with a single steam account? or an option to reset all modifications on planets made by the user?
Just install the game twice, on separate hard-drives. I have done this with other Steam games that I modified heavily and wanted to keep apart from the base game. It IS a lot of work just for one game though.