Thrive

I just found out about this amazing project called Thrive. The text from it's page describes it better than I could :

Thrive is a free, open-source game currently being developed by an online volunteer team called Revolutionary Games. Drawing inspiration from numerous simulation and strategy games (in particular the original concept behind the PC game Spore), Thrive is a game about a species’ evolution from unicellular organisms to galaxy-wide space travel.

Our team seeks to accomplish two major goals: create engaging, compelling gameplay that respects our players’ intelligence, and remain as accurate as possible in our depiction of known scientific theory without compromising the former. The eventual game will contain powerful creation tools, allowing players to realistically craft organisms, technology, cultures, and even entire planets.

Sounds amazing, right? And it looks like it has already come a long way as this video shows :

This game I'll have to keep track on, should be amazing once it's more finished!
Check out the latest releases here if you're curious!