We've heard your feedback, and we're responding: Nature on Steam now comes with Arctic Tundra, Jurassic, and Flight included! 
Why the change?
Some players found the base game on its own to be a bit simple, which was reflected in its reviews. We had overwhelming feedback from the Steam community that Nature really shines when you add in the Modules. In fact, 9 out of 10 Evolution players who try the full system prefer it to Evolution. We want you to experience it (and review it!) that way too. We've done a price adjustment on Nature, and it now includes the Modules.
What this means for you:
New Owners: You'll get Flight, Jurassic, Arctic Tundra and Nature in a single high value package.
Existing Module Owners: You shouldn't notice any visual changes, but this will reduce loading times.
Help us grow:
If you enjoy the Nature Game System, please consider leaving a review. Your voice helps other players discover the game.