Great game once you get the hang of it.
Is actually 5 different games.
just when you learn how to grow your microbe,, the game evolves you into a very different creature. when you start getting the hang of that, then it evolves into a tribe of creatures to work with, then you evolve into a society looking for planetary unity. then when you get your planet evolved, you become a space cadet, which is by far the funnest, due to missions and freedom of choice.
that's as far as I got so far and obviously lots of adventures and things to find ahead. will it evolve again?
Each stage gives you the choice on whether to use diplomacy, friendship or brute force to get your way, and each stage allows you to design your character, it's home, and vehicles. millions of possibilities and infinite repayabilty.
I look forward to a second playthru now that I know a bit of what's going on. but you can start at whatever stage you want. It will be worth the price just to play "Galactic Adventures" stage. I have been amazed at the variety of missions you can go on. even galactic adventures seems like several different games. there are space battles, colinization, teraforming, puzzle solving and item retrieval missions, and probably much more.
Buy it and enjoy the variety.