30 Floors Up Day by Day

The first days are about running out. Water is the first to go: Night 0 tells you to store it while the taps still run, Day 2 tells you to fill every container before they stop, and Day 4's objective says the building is silent without power. By Day 6 you're collecting rainwater and treating it.

Each warning arrives a day or two before the thing it warns about, so doing the objective early is the whole trick. The same advice is written in the in-game book: store water before the taps stop, and count tomorrow's food before eating extra today.

Day 3 is the first time zombies come for you. Something is gathering in the corridor, you check the peephole and prepare the entrance. The brace objective is specific: drag the couch to the marked position, then add furniture, because a chair can jam the handle.

After the attack the game states the lesson itself: furniture braces hold far better than a lock alone. By Day 8 the objective is to repair and brace the door before night, so the barricade needs upkeep.

This page covers Night 0 to Day 8 because that's what the player videos we checked reach. The game description promises 100 days, rooftop shelters, escape plans and a choice between waiting for rescue and risking a way out, and we haven't seen the later days or the endings. We'll add them when a video shows them.