Frostpunk: The Board Game

Gather Resources and Use a Building can be heated or cold depending on the Heat marker vs. the Heat Range indicators (and building insulation/zone); if an action is cold, before resolving it you must increase the Sickness marker for the Meeple type used by 1. (Rulebook pp.23–24)

You may fuel the Generator in the Generator Phase (spending Coal to advance the Heat marker), and you may also fuel at the start of your turn and in the Night Phase, but the Generator Stress check (dropping Coal into the tower and placing Stress cubes/overflow) only happens in the Generator Phase — fueling during the Action Phase does not trigger the Stress check. (Rulebook pp.20, 23, 29)

When a Citizen dies you move the Corpse marker forward, move the corresponding Citizen marker back, then draw a Citizen card and apply the death effect printed for that Citizen type (alternatively a player may discard a matching Citizen card to apply its death effect). (Rulebook p.30)

When you increase a specific Hope/Discontent type you first draw a token and place it exhausted on the leftmost empty space, then, if possible, activate (flip) one exhausted token of the indicated type; when increasing unspecified Hope/Discontent you may either draw a token exhausted or activate any exhausted token, and when decreasing you either exhaust an active token or remove an exhausted one. (Rulebook pp.17–18)

Tents, Bunkhouses and Houses provide shelter for 2 Meeples each during the Night Phase only if the Shelter is heated (and not flipped to its Ruins side); whether a Shelter is heated is determined by the Heat marker, Heat Range indicators, and insulation rules as for other Buildings. (Rulebook pp.29, 24)