This game IS FANTASTIC 10/10, but it would be even cooler to add a moon! When you start up the game you will be greeted with A MOON!
This would be cool because eventually, after future city it will say "moon" and if you have enough intelligence, you would eventually terraform that moon and have 2 little planets that would be habitiable. And after the moon is terraformed, you can make spaceships and be able to attak other players with thier moon terraformed. And eventually set up defences. Maybe even terraform other planets in your solar system. So, if you were to do this, might as well make the game "Idle Planet Online" with it saying in the description, "Make your world, evolve it... Make your moon, evolve it... Make war with players... Terraform any planet in your solar system... Take control... This is your army, your world, your moon, don't let the others take that... Idle Planet Online..." then, you could possibly have an add on the game...
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 "Idle Planet"){kind=icon}