Easy to understand after the tutorial playthrough and engaging fun. I was looking for a low-stress world building game that wasn't too complex. The ones I have are all so lengthy and layered that I couldn't quit halfway through a playthrough for fear of never being able to pick back up all the elements I had going. Terraformers is a great compromise -- still enough complexity that it's not rinse and repeat, but no complicated pipelines or battles. Definitely worth the money.
