Zombie Air Force Coins Guide
Every plane, upgrade and defense in Zombie Air Force is priced in Coins (the Credits your kills pay out), so the real question of progression is simple: how fast can you farm? This guide covers the full income stack — the permanent boost multipliers, the code drops worth thousands, the daily rewards system, and the farming loop that pays best per hour as of the current update.
Step one: the permanent +30% boost stack
Three account-level coin boosts exist, they stack, and two of them are free forever. Join the game's Roblox group for +10% coins. Like the game for another +10%. Hold Roblox Premium for a final +10%. That is up to +30% coins on every single kill for the rest of the account's life — set up once in under a minute, and it quietly multiplies every farming method below. No serious farmer skips this; it is the closest thing the game has to free money.
Step two: codes — thousands of Credits for thirty seconds
Redeemable codes are the biggest instant income in the game. The current active codes grant timed boosts plus direct Credit payouts — one of them is worth 2,500 Credits on its own, which is a meaningful chunk of an early aircraft step. Codes arrive with updates and expire without warning, so the routine is: redeem what is live before you farm (their timed multipliers should run during a session, not while you are offline), and recheck the codes page after every Saturday update.
Step three: daily rewards
Update 1 introduced daily rewards, and they do exactly what the name promises: showing up each day pays a bonus. For farmers, daily rewards function as a baseline income floor — Credits that arrive whether or not the session goes well. Log in, claim, then farm; never let the day's reward lapse, because it is the only income in the game that requires zero kills.
The farming loop: zone, wave, repeat
With the multipliers running, the actual farming question is where to fly. The rule: farm the hardest zone you can clear comfortably. Deeper zones pay more per kill, but a zone that stalls your run pays less per minute than an easy one you shred. Watch your per-session income rather than per-kill payouts — the coins guide's version of "profit" is Credits per hour, and comfort wins until your plane genuinely outguns the zone.
Session structure matters too. Redeem boosts first so their timers run during play. Fly the horde's densest columns rather than chasing stragglers — income per minute comes from splash-heavy fire into crowds. And end sessions on a completed wave: credits bank between runs, but the timed boost minutes do not, so let them expire mid-farm, not mid-lobby.
What the income buys, in order
Fast Coins exist to feed the progression chain: the next damage upgrade, then the next aircraft step, then defensive depth as zones demand it. If you are unsure where your banked Credits should go, the upgrades guide keeps the priority list current. Stack the boosts, redeem the codes, claim the dailies, farm the comfortable-hard zone — that loop is the whole Zombie Air Force economy, and it compounds every week the Saturday updates add to the ladder.