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11,644,775 awarded · created 2026-09-05
Welcome to the game!
Build and Kill Zombies Items, Currencies & Rewards (Wiki Reference)
The currency system, every item a code has documented, and the badge evidence — each row naming its source and checked date.
Checked 2026-10-03Build and Kill Zombies wiki
Quick answer: Cash runs the game, codes seed it, events mint their own
Build and Kill Zombies has one core currency and two event currencies. Cash comes from combat — kills and wave progress — and buys every weapon, defense, and car upgrade, which makes clear speed your income rate. Codes have documented the only fixed payouts: 500 to 5,000 Cash plus named items like a Small Engine, a Small Tank, a Crossbow, and a Mounted Gun. The Limited Hacker Event 2026 ran on Hacker Tokens (expired codes paid 50–2,500), and a newer Lightning Token currency arrived with the ZEUS code (50 Tokens). Redeem what is currently listed on the codes page first — free Cash and parts beat any farm session on a fresh account.
Currencies
The three currencies, with their evidence
Each row names where the currency is documented. Checked 2026-10-03.
| Currency | How it moves | Documented evidence | Source |
|---|---|---|---|
| Cash | Earned from combat: kills and wave progress. Spent on weapons, defenses, and car upgrades. | Official description: earn cash and upgrade your build. Fixed payouts documented via codes (500 / 1,000 / 5,000). | Official Roblox page; PCGamesN, Eurogamer, GamesRadar |
| Hacker Tokens | Event currency of the Limited Hacker Event 2026. Codes paid 50–2,500 Tokens; the event has since wound down and its codes expired. | HACKER (50), 1x1x1x1 (150), CYBERHACK (2,500), NEWBOSSNEXTWEEK (1.5k) — all expired per trackers. | IGN, Pocket Tactics, Eurogamer, RadioTimes |
| Lightning Tokens | Newer currency type, redeemable through the ZEUS code (50 Tokens). The developer has not documented its sink yet. | Listed as NEW by three editorial trackers in the same week. | Pro Game Guides, Destructoid, TechWiser |
Reward register
Every documented item and reward
Code rewards are developer-set values, so they double as official evidence that each named item exists in the game.
| Reward | Channel | Source |
|---|---|---|
| 500 Cash | Code: CashDrop | PCGamesN, Pro Game Guides, Destructoid |
| 1,000 Cash + 1 Small Engine + 1 Small Tank | Code: COMMUNITY | Eurogamer, TechWiser |
| 5,000 Cash (requires 1,000-stud best distance) | Code: IAMPRO | GamesRadar |
| Two Passenger Seats | Code: MOREFRIENDS | PCGamesN, Pro Game Guides, Destructoid |
| 50 Lightning Tokens | Code: ZEUS | Pro Game Guides, Destructoid, TechWiser |
| 1,000 Cash + Crossbow + Mounted Gun | Expired code: PAINTEVERYWHERE | IGN, Pocket Tactics |
| Hacker Event attendance reward | Badge: Hacker Event 2026 (7,706,374 awarded) | Roblox badges API |
| Boss-defeat recognition | Badge: You defeated the King 1x1x1x1 (1,492,107 awarded) | Roblox badges API |
Expired rewards stay listed because they document items — the Crossbow and Mounted Gun rows are the strongest public evidence of a weapon catalog. Current redemption status lives on the codes page, re-checked daily.
Badge evidence
Official badges and how many players hold them
From the Roblox badges API — award counts show how far the average player has pushed into the game's content.
Hacker Event 2026
7,706,374 awarded · created 2026-09-05
You attended the Limited Hacker Event 2026
You defeated the King 1x1x1x1
1,492,107 awarded · created 2026-09-05
You defeated the Hacker Event Great Boss! Well done..
Reading the numbers: 11.6 million Welcome badges against 41.2 million visits shows how many players reach the first milestone, and 1.49 million King 1x1x1x1 defeats against 7.7 million event attendees means roughly one in five who attended the Hacker Event beat its Great Boss.
Earning rules
How the income actually flows
The loop the whole site plans around, in four rules.
- 1. Kills are income: every zombie your build reaches pays Cash, so coverage (funnels, kill zones) is as valuable as raw damage.
- 2. Deeper waves pay more per kill as difficulty rises — but a failed deep run earns less than a finished safe one.
- 3. Codes are lump sums on top: claim every listed code before a grind, and treat a 5,000-Cash code as several free runs.
- 4. Reinvest immediately: unspent Cash does nothing between runs, and each clear-speed upgrade raises the rate the next run earns.
FAQ
Items and rewards questions
What currencies exist in Build and Kill Zombies?
Three have surfaced so far: Cash, the core currency every run earns from kills and wave progress; Hacker Tokens, the Limited Hacker Event 2026 currency that expired codes paid out (50 to 2,500 per code); and Lightning Tokens, a newer type that the ZEUS code pays 50 of, listed by Pro Game Guides, Destructoid, and TechWiser.
What items can codes give?
Documented code rewards include cash amounts (500, 1,000, and 5,000 Cash), named weapons (a Crossbow and a Mounted Gun), car parts (a Small Engine, a Small Tank, and Two Passenger Seats), and event currencies. The codes page keeps every listing with its current status and checked date.
How do you earn Cash in a normal run?
Combat pays: every zombie killed and every wave survived adds Cash, which buys weapons, defenses, and car upgrades. The developer has announced no official cash-rate table, so plan with your own measured rate — the cash calculator runs on it.
Do badges give rewards?
Badges document achievements: the official badge list includes a Welcome badge, the Hacker Event 2026 attendance badge (7.7 million awards), and the King 1x1x1x1 defeat badge (1.49 million awards). Badge award counts are public on the Roblox badges API, checked 2026-10-03.
What are Lightning Tokens for?
The in-game use has not been documented by the developer yet — the currency arrived alongside the ZEUS code listing in late September 2026. This page tracks what the trackers list; the codes page keeps the redemption status current.
Every section above is part of the Build and Kill Zombies wiki hub, where the core systems are indexed with sources and dates.
Related pages
Where to go next
Codes status
Every listing with its reward, status, and checked date.
Cash system reference
The run-income formula and goal math.
Car builds & loadouts
What the weapons and parts attach to.
Waves & systems
Wave survival, servers, and events.
Cash farming guide
The loop that raises Cash every run.
Updates
Verified timestamps; new rewards arrive with updates.