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Game guide
Zombies vs Security Guide: First moves when a run begins
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About
OverviewZombies vs Security is a tower defense game on Roblox where you place security units to protect your base from waves of increasingly dangerous zombies.
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Contents
01
First moves when a run begins
Step
In short
Spending a few seconds reading the map before placing anything saves you from costly early mistakes.
Your resources at the start of a run are tight, so every placement decision matters from the first wave.
- Read the map find every route zombies can take toward your base before placing a single unit.
- Count your resources know your full starting budget so you do not overspend on the first entrance and leave others open.
- Cover the main entrance put your first units at the point where zombies arrive earliest.
- Secure the base perimeter make sure at least basic coverage exists around the whole base, not just the front.
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02
Resource budget across waves
CheckIn short
Planning what you will spend across waves is the central skill of the game.
Resources come from defeating zombies and clearing waves. Matching your spending to the pace of incoming danger is the central skill of the game.
- Check whether you can afford the next security unit before the wave starts, not during it.
- Estimate how much you will earn from the current wave so you know what will be available afterward.
- Look at every placed unit and ask whether it is actually stopping zombies idle security is wasted money.
- Avoid spending your entire reserve in one wave; later waves grow harder and you will need purchasing power.
03 Live and upcoming events
Events
Events running now or coming soon. They have fixed dates, so check them first.
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04
Placement strategy that holds
TipsIn short
Layered defenses spread across all sides of the base outlast any single concentrated cluster of strong units.
Where you place security matters as much as which security you place. Zombies will find and exploit any gap in your line, so coverage and positioning beat raw power.
Tips worth knowing
- Build multiple defensive layers along each route so zombies are weakened before they reach the base.
- Narrow chokepoints on the map let each unit stop more zombies — prioritize those spots.
- Guard the sides and rear of the base with the same care you give the front; zombies enter wherever the opening is.
- Check your entire perimeter between waves and close any gap you find before the next attack arrives.
05
Common mistakes and how to fix them
Warn
In short
Most early game-overs trace back to fixable habits, and recognizing them is more than half the solution.
After a few failed runs, patterns become obvious. Pinpointing where zombies broke through and why gives you a clear target to improve on the next attempt.
Worth watching out for
Spending all resources in round one leaves you unable to respond when later waves hit harder.
Stacking everything in one spot creates a strong point surrounded by open gaps that zombies walk right through.
Relying on a single type of security means one tough zombie variant can collapse your entire defense.
Ignoring side and rear approaches guarantees a breach there
every unguarded path will be used.
Treating a failed run as pure loss wastes it
note where the breach happened and fix that exact spot next time.
06
Playing without spending real money
SummaryIn short
Strategic placement and careful budgeting carry free players deep into high-wave runs.
The game is built around placement decisions and wave management, so a well-planned defense can reach advanced waves without any purchases. The short length of each run also means you can practice strategies quickly and refine them across many attempts.
- Free path basic security units placed across all routes can hold into the later waves if spending is controlled.
- Replay value each short run is a chance to test a different layout and improve on the last.
Glossary
Glossary- Security
- A defensive unit you purchase with resources and place on the map to stop zombies from reaching your base.
- Wave
- A timed attack phase in which a group of zombies advances toward your base; each successive wave brings more and stronger enemies.
- Resources
- The in-game currency earned by defeating zombies and clearing waves, used to buy and place security units.
- Defensive line
- A row or layer of security units positioned across a zombie route to slow or stop their advance.
- Base
- The central area you must protect; if zombies reach it, the run ends.
Common questions
FAQHow do I earn more resources during a run?
You earn resources by defeating zombies and by clearing each wave.
Does it matter where exactly I place a security unit?
Yes — placement is one of the most important decisions in the game. Zombies will find and exploit any gap in your line, so placing units along zombie paths rather than leaving gaps is essential.
I keep getting game-overs in the same spot. What should I do?
When the same area breaks every run, it means that spot has either too few units or a gap between them. After each failed run, trace the exact path the zombies used to reach your base and add or reposition coverage there before the next attempt.
Is there any point in using more than one type of security?
Mixing types makes your defense much harder to collapse. If you rely on only one kind of unit, a wave with zombies that counter that unit can wipe out your entire line at once.
Updated Oct 3, 2026
Game updates can change what is on this page. If you spot something, get in touch and let us know.
Game updates can change what is on this page. If you spot something, get in touch and let us know.
