Paid, only people that supported the developers from the very start were promised to get a free steam key.
above the workstation
Just follow the quick starter guide, then make another robot craft a shovel and press teach, dig in the tree soil, after that you place a tree sapling in the hole and voila, you just have to make new tools from time to time and reload your robots
a really funny game but if it would be more diversified it would be even better :D