I love the use of the three stat mechanic here. Especially the leveling system; so slim, so clean. But failure has stark consequences as well. Well done there. I wish all that were written even more simply so I could have more story or setting. The balance between surviving against the environment or each other and working together to relight the sun is too precarious at lower levels. There doesn't seem to be much reward in doing nothing, so you must do something! I can see this being a team exercise for sure. Very open for interpretation as to what to do during a session. Wow. A multi-session system. So cool!