I was thinking... The atmosphere (pressure and composition), day lenght, orbital period, surface temperature, gravity, radius and mass are features of the planets in the game? Because... I would like to create, for example, a specie of a hight gravity world, like the Elcor of Dekuuna in Mass Effect... Or a specie that can breathe ammoiac insteat of oxigen, like the Volus of Irune in Mass Effect too. Or are we limited by earth-like species?
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