Quote from: Pax_Empyrean on July 27, 2016, 06:40:58 AM
Make colonists (the easy change) and warm-blooded animals (little more work) a minor heat source when indoors. Now you've got players huddling their colonists together in smaller rooms if they need to keep warm.
"The human body generates more bio-electricity than a 120-volt battery and over 25,000 BTU's of body heat." - Morpheus.