Waterline: Night Plumber

A city sleeps through the rain. Somewhere under the streets, one person keeps the water where it belongs — and tonight, that's you. Waterline is a quiet, exacting water-equalization puzzle. Every level is a row of tanks joined by breakable walls. Tap a wall, and the water on both sides finds its own level — the volume-weighted average, settled by gravity, every time, exactly. Your job is to break the right walls in the right order until every gold line in the room is met. That's the whole rule. There is nothing else to learn and nothing hidden: the full state of every tank is visible before you touch anything, and the same taps in the same order always produce the same water. No luck, ever — only reframing what's in front of you. It starts simple. It does not stay simple. Waterline is proudly, deliberately hard, and it gets harder in every district you enter — the curve only ever rises,…