Age of Origins Biochemical Lab Guide: Zombie Troops From Your Dead

Part of the Base Building series:

• Intimacy Guide: The Lucy & Saya answers this building's storyline leads to.
• Medici's Treasure Guide: The event your zombie troops were born for.

Quick Answer

• The Biochemical Lab houses three facilities: the Treatment Room (heal Lucy and Saya), the Biochemical Hospital (heal your troops), and the Biochemical Workshop (recruit zombie troops).
• The community-settled opening: give every healing vial to Lucy first until Stage 12 unlocks Intimacy — and with it, Biochemical Technology points.
• Biochemical material comes from your dead troops — a share of every army you lose feeds the Workshop, which turns the game's worst outcome into an input.
• Zombie troops start weak — early on they're a meat shield and a material engine — and become real once the Biochemical Technology tree matures.
• Healed infected can be dispatched on exploration missions up to 3 times a day — free items most players forget exist.

Biochemical Lab at a Glance

Facility	What it does
Treatment Room	Heals Lucy and Saya
Biochemical Hospital	Heals your troops
Biochemical Workshop	Recruits zombie troops

	Detail
The opening play	Give every healing vial to Lucy first until Stage 12 unlocks Intimacy, and with it Biochemical Technology points
Where material comes from	Your dead troops — a share of every army you lose feeds the Workshop
Zombie troop curve	Weak early (meat shield and material engine), real once the Biochemical Technology tree matures
Free items most people miss	Healed infected can be dispatched on exploration missions up to 3 times a day

The Darkest Building in the Game

Every other building in your city fights the apocalypse; the Biochemical Lab licenses it. The premise: you rescue two infected survivors — Lucy and Saya — feed the Treatment Room healing vials, and advance their recovery through numbered stages. Along the way the building sprouts its two working wings: a Biochemical Hospital that heals ordinary troops, and the Biochemical Workshop, where the real prize lives — recruiting Biochemical Zombies as a troop class of your own.

The strategic hook is the material economy. Biochemical material is produced from your dead troops — when your armies die attacking or defending, a share of the remains flows to the lab. Read that twice, because it quietly rewrites the game's loss accounting: every kill event disaster, every failed defense, every over-ambitious rally now pays a consolation dividend in Workshop fuel. Veterans push it further with the deliberate "suicide troop" tactic — sacrificing batches of cheap, low-tier troops specifically to farm material. Ghoulish, effective, and exactly the kind of edge that separates players who read patch notes from players who read lore.

The Lucy-First Opening

Vials are scarce, and splitting them between both patients delays everything. The settled play: all vials to Lucy until Stage 12 — the threshold where Intimacy unlocks, and with it the question-and-answer system (correct answers pay bonus points) and Biochemical Technology points, the currency of the zombie tech tree. Saya's turn comes after; the tech unlock is the schedule-setter.

Two habits once healing progresses:

1. Dispatch the infected on explorations — 3 per day. Healed characters can be sent to find extra items; it's a daily-claim most players never open.
2. Work the intimacy loop — dates, gifts, questions — with gifts banked for Alliance Bounty windows, where "Send Gifts to the Infected" is a scoring category.

Zombie Troops: Patience, Then Payoff

Honest expectations: fresh Biochemical Zombies are weak. Their early job is soaking hits and existing — a renewable meat shield in the fights that allow them. The transformation comes from the Biochemical Technology tree, fed by intimacy-earned points, which buffs them toward genuine late-game relevance.

Where they already shine, at any strength:

• Medici's Treasure — zombies auto-heal after every battle in the Monday dungeon, and the Poisonous Monster-Tyrant boss only takes damage from them. No zombie program, no boss kill.
• The Underground Factory weekly — a push-deeper-each-week challenge built around committing zombies (alongside regular troops and machines).
• Titan equipment synergy — Titan gear buffs extend to Biomechanical/Biochemical zombie units, stacking two late-game systems.

The Investment Case

The Biochemical Lab is a classic late-bloomer: months of vials, stages, and intimacy points before the payoff curve bends upward. Sequence it accordingly — after your core army and research foundations, alongside the other long projects — but start it early, because the storyline's clock only runs while you're feeding it. And once the Workshop is live, audit your material flow: if you're fighting regularly, you're already generating fuel; if you're at peace, the Monday dungeon and event discounts (Medici's has sold material at 40% off for gold) top up the tank.

The endgame image is worth the grind: the horde that spent a year trying to eat your city, marching out of it under your flag.