Maki Games has revamped their stretch goals for their Modular Terrain Kickstarter project as well as posted a guide to the current free stuff available at each pledge level.
From the update:
Here is the first rewards ticket.
Next to the logo of each reward there is the number of accessories that are added for free to the corresponding pledge.
So, for example, if you pledged for the General Level you get 5 floors, 10 stairs and 10 pylons for free!