30 Floors Up Classes

The Plumber card is about water, which is the first thing the game tells you to worry about. It frees stuck valves and fixes leaking connections faster, and it wastes less water when you draw from damaged containers or from the fallen tank. The Day 31 objective in a long run mentions the north tank's riser valve and says you need a wrench, and the Plumber starts with a compact wrench.

The card also lists what the class can't do: it can't bring the mains back, and untreated water still needs treating. See the food and water page for how treatment tablets fit in.

Survivor is the default. The card is blunt: no bonuses, nothing essential needs one, and every mechanic in the game works for you. It's a useful reference point, because it tells you the other classes are shortcuts and not requirements.

The video we took the list from shows the class names in a scrolling list. Only the Survivor and Plumber cards were open on screen, so we won't guess at what Cook, Medic or Electrician do from their names. We also don't know how a class is unlocked or what it costs; the shop footage shows the currency counters at 0 and doesn't show a price on the cards.