YORG.io

YORG.io combines supply-chain management with zombie defense. Daytime is safe; you build crystal mines for income, factories that produce ammunition from mined resources, transporters to connect everything, and defensive towers to hold the line. Nighttime brings zombies attacking your buildings, growing steadily stronger each wave and culminating in a boss every 10 waves.

Each game starts with a new resource configuration that shapes your strategy from the placement of your base outward. Defensive towers each carry their own strengths and weaknesses, requiring careful placement to maximize effectiveness, and constant ammo supply to stay useful. The supply chain is what keeps everything fed: skip a step and the towers go dry.

As nights stretch into later waves, zombies evolve abilities that challenge even titanic defenses. The Dread Overlord boss appears every 10 waves and demands everything you have. The game runs without a hard limit, so the longer you survive, the higher your name climbs on the leaderboard.