Yet Another Zombie Survivors Bio Lab Map Guide

Confirmed Bio Lab identity

Bio Lab is a Version 1.0 arena. The official release describes it as a circular facility whose borders are filled with toxic fumes, with a decontamination process that creates a red danger zone. It also says the location contains high-tech experiments and powerful enemies. These are the confirmed map facts; they do not provide a numerical hazard table or boss script.

Added in

Version 1.0

Unlock

Complete Dead Terminal on Default mode

Arena form

Circular facility with a toxic outer boundary

Version 1.0.0b

Bio Lab was fixed as a selectable leaderboard arena

The release states that Bio Lab unlocks after completing Dead Terminal on Default mode. Use that exact condition when checking access. Do not merge it with the separate Boss Rush or Infinite-mode rules. The map’s own prerequisite is clear and source-backed.

Hazard and leaderboard notes

The toxic border and moving decontamination danger are the central positional constraints named by the official release. Observe their current behavior before making a route, because the source does not list a fixed safe cycle or damage value. The best first goal is learning how much space to leave before a red zone reaches your path. That is a practical test, not an invented strategy.

Version 1.0.0b fixed Bio Lab not being selectable on leaderboards. This confirms a leaderboard selection correction only. It does not announce an arena rebalance, a new unlock, or a changed hazard. Keep the patch context beside any leaderboard comparison.

What to check before planning a Bio Lab run

A fuller Bio Lab guide will add current details for hazards, enemy names, bosses, modes, mission interactions, and preparation choices. The official source supports the circular shape, toxic border, decontamination zone, unlock, and leaderboard fix. It does not give spawn odds, attack values, or one squad that fits every run, so check those in the current game.

Use the dedicated Bio Lab guide for a longer walkthrough, and return here for the official map details. Do not treat a leaderboard-selection fix as proof of a new strategy or changed hazard value.