As Generation 167 is about to begin, an unexpected visitor arrives in the skies of Sagan 4. Aliens have come to Sagan 4.
Major predators above 1m in size have a 50% chance of going extinct.
Size changes can be doubled. (A 2x normal boost becomes a 4x boost)
Atavism genes can now reach ancestors ancestor regardless of # of generations
Hybrid species between unrelated macroscopic organisms, because of the alien experiments, are much more likely to occur for this Gen only.
Hybrid flora species slots 0/10 filled
Hybrid Fauna species slots. 0/5 filled
Microscopic Life has spread to Mason by these aliens.
Revived Life: A species previously thought extinct has been brought back to life.
0/5 slots filled
Luckily the invaders will move on at the end of this Generation, But their impact will be felt for millions of years to come.
Oh, and by the way,
April Fools