Infinity:The quest for Earth its a new mmo game that i found,it's still under development and doesn't seem to me that it will be released soon...

It belongs to the sci-fi genre with various space simulation elements.It hasn't levels your progression is how wealth you have and how many resources your clan have and the territory you claim.

Infinity features an advanced procedural engine allowing for a seemingly infinite galaxy of unique star systems and planets to discover and explore, including seamless planetary landing.(Yes that part is copy-pasted from their website )
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It's sandbox

Edit: Their website www.infinity-universe.com