Gaming Guide

Zombie Air Force: How to Farm EXP and Credits Fast for Beginners

The chain gun loop, upgrade order, defenses, and active codes that build Credits and EXP fastest.

The chain gun loop, upgrade order, defenses, and active codes that build Credits and EXP fastest.

Zombie Air Force puts Roblox players in an attack helicopter above a city, where they work together to eliminate zombie waves, deploy ground defenses, and use earned Credits to purchase more than 180 upgrades. Fresh green beans developed the game, which debuted on September 24, 2026. It remains in Alpha, meaning weapon balance and upgrade prices may shift with patches. Credits and EXP fuel the entire game, and kills are the main way to earn both.

Quick answer: Max the Apache M230 chain gun first, join a full server, fly low over a zombie spawn cluster, and fire only at regular zombies while teammates handle the mini-bosses.


The fastest Credits and EXP loop

Your rewards are determined by the number of enemies you eliminate, rather than their difficulty. Pointing one automatic gun at a packed crowd earns more Credits per minute than combining rockets, snipers, and shotguns. Once prepared, this farming cycle is easy to repeat.

Placing Gun Nests00:18Placing Gun Nests
A helicopter hovers over a glowing Gun Nest placement indicator near the alley. Shown at 00:18 in CHALLS’s video. Image: fresh green beans

Choose a busy server. A larger population brings fuller zombie waves, and teammates can handle the more dangerous enemies. Low-traffic servers offer too few mobs to keep kill streaks going.

Deploy the Apache, then drop to roughly 20–35 ft and hover directly over the zombies’ spawn point. Staying this low keeps the M230 Chain Gun’s reticle tight on the group, so each burst hits several zombies at once instead of passing over them.

Beyond the Gun Nest, the upgrade tree opens more defenses like Barricades, the Arc Tower, and the Cryo Emitter, plus extra aircraft such as the MH-6 Little Bird and the ZA-6 Grimhawk fighter jet. For heavier groups, swap the chain gun for Hydra Rockets and fire volleys into clumps and Bearer bubbles for splash damage.


The Reanimator and elite threats

A cutscene introduces THE REANIMATOR, a glowing boss that arrives alongside Flak Pods on rooftops and several elite zombie types. The on-screen tip tells you to shoot its lantern. Keep the rest of the team or your defenses managing the regular horde while damage is focused on the boss, rather than letting everyone tunnel on it while zombies overrun the core.

The Reanimator Threat Cutscene03:38The Reanimator Threat Cutscene
The Reanimator threat card — aim for its lantern while defenses hold the smaller zombies. Shown at 03:38 in CHALLS’s video. Image: fresh green beans

Other alerts interrupt the flow during a run. A “FLYERS INBOUND” warning signals airborne enemies, so drop another Gun Nest and split fire between flyers and the ground crowd. A “TUNNELLERS” alert means zombies are digging under the base, which you either defend against or clear before they reach the core.

Rebuilding Gun Nests Against the Swarm02:22Rebuilding Gun Nests Against the Swarm
A Gun Nest placement preview is aimed at the ground near existing defenses. Shown at 02:22 in CHALLS’s video. Image: fresh green beans

Codes and the group boost for extra Credits

The two currently active codes each provide a timed EXP and Credit boost as well as a fixed Credit payout. Redeem one before beginning a farming session.

Deploying Additional Defenses01:35Deploying Additional Defenses
Gun Nests stand among zombies and gunfire on the street. Shown at 01:35 in CHALLS’s video. Image: fresh green beans
CodeReward
SORRY50% EXP boost for 60 min and 2,500 Credits
THANKYOU+50% Credits boost for 30 min and 1,000 Credits

To redeem, run Zombie Air Force on Roblox and finish the short tutorial, open the Store using the button on the left edge of the screen, type a code into the text box at the bottom of the pop-up, and hit Redeem. Copy and paste the code to avoid typos. The EXP timer or Credit drop appears right away when it works.

Joining the official Fresh Green Beans Roblox group gives you a permanent +10% bonus to XP and Credits. Join before grinding; this bonus combines with codes and weekend bonuses. The group and the game’s Roblox page are also where new codes are posted.


Claim missions and playtime rewards

The lobby offers ways to earn beyond match payouts. Claim daily objectives in the Missions menu, such as Fly 15 km, and collect Credits and medals from Playtime Rewards, which accumulate the longer you remain in the game. When you try to leave, a “HEY! WAIT! DON’T LEAVE!” retention modal appears; accepting it awards +50% Credits, +50% XP, and +1,000 Credits.

The Paint Shop and Skins menus hold helicopter camouflage, name tags, and pilot voice packs like Commander, No Voice, and Valkyrie. These are cosmetic and do not affect your Credit rate, so they can wait until your chain gun is maxed.


How to tell your run paid off

During the match, the kill streak should climb steadily and the Credits counter in the resource panel should tick up through each wave rather than in small jumps. Clearing a section triggers a “SECTION 1 CLEARED” objective notification, confirming the wave is done.

Section 1 Cleared03:24Section 1 Cleared
The section-cleared banner confirms the wave is done before the next threat spawns. Shown at 03:24 in CHALLS’s video. Image: fresh green beans

After the match, the completion screen displays your kill and score totals and lets you vote for the map for your next deployment. A successful run puts you a few levels higher and gives you enough Credits to purchase the next chain gun node immediately—a sign that the farming loop is working as intended.

Spraying Zombies with the Chain Gun00:52Spraying Zombies with the Chain Gun
A helicopter-mounted M230 Chain Gun fires toward glowing green and yellow zombies, with a kill streak indicator on screen. Shown at 00:52 in CHALLS’s video. Image: fresh green beans