1,000-player milestone: enter THANKYOU in the shop for a free bonus
Zombie Air Force Guide

Zombie Air Force co-op and progression

Quick answer

Run squads of lane holder, breaker and engineer. Stack the group +10%, invite buff, weekend x2 and Credit Boost — weekend sessions with the full stack are the fastest honest progression.

Zombie Air Force gunship firing a Hydra rocket at a horde

Zombie Air Force is built for squads. Servers hold up to 10 players, the objectives assume people defending each other, and the progression systems reward playing together far more than solo grinding. This page covers squad roles, the progression ladder, and the multiplier stack that makes farming sane.

Squad roles that work

RoleFlyJob in the squad
Lane holderGunshipLock down one approach so zombies cannot reach the objective
BreakerStrike fighterRockets and airstrikes on clusters, Behemoth damage
EngineerAny airframe with defense upgradesOwn the defense grid: placement, timing, upgrading the Cryo Emitter playstyle
SupportFast airframeReposition to the objective the moment the banner shifts, covers teammates' repairs

A three-player squad running lane holder + breaker + engineer is more than the sum of its parts; a five-player squad that all pick "breaker" is a dying squad with good damage numbers.

The progression ladder

  1. Credits fund the upgrade tree — every battle pays, and performance scales the payout.
  2. Medals and Honors gate prestige-level unlocks — earned from accomplishments, bundles, and pushing deeper sections.
  3. Prestige resets tree progress for permanent multipliers — the endgame loop for a finished account.
  4. The front line is the true difficulty meter — each section's zombies and Behemoths punish the damage numbers the previous section taught you to build.

The multiplier stack

This is the single most practical thing on this page. Every bonus in the game is designed to stack:

  • Group membership — join fresh green beans for +10% XP and credits, permanently.
  • Invite a friend — free XP and credits buff for playing together.
  • Weekends — the ×2 buff makes weekend sessions worth two weekday sessions.
  • Credit Boost pass — +50% credits every battle, forever, stacked on top of all of the above.

Plan your big farming sessions for weekends, in the group, with a friend, and the credit curve stops feeling like a wall.

Progression mistakes

  • Solo farming when a group exists. The group bonus is free and permanent; not joining is actively choosing a slower account.
  • Ignoring weekends. A double-credit weekend is the correct time for your longest sessions; spend weekdays practising objectives instead.
  • Splitting upgrade points across every branch. Depth beats breadth until at least one weapon branch is fully carrying early waves.
  • Flying the same role in every squad. Flexibility is why the engineer and lane-holder roles stay valuable at every section.

FAQ

How many players can play Zombie Air Force together?

Up to 10 players per server, and squad objectives are designed around that scale — but three coordinated players already cover all the essential roles.

Does the game have matchmaking?

You drop into public servers and play with whoever is there. For consistent progression, join the group and play with friends so your bonuses and roles line up.

What is the fastest honest way to progress?

Weekend sessions with the full multiplier stack, spending credits in one focused upgrade branch, and pushing the highest section your squad clears without wipes.