Build a Gun Army Guide: Your first few minutes
About
OverviewBuild a Gun Army is a Roblox tower defense game where zombies attack your base in waves and you hold them off by buying guns that shoot automatically. This guide covers how to get started, where to place guns, how to push through harder waves, and how to make use of offline defense to grow your arsenal over time.
What is on this page
Contents
Your first few minutes
Step
When you first load in, you start with enough coins to buy your first gun. Place it and it begins firing at enemies on its own — you do not need to aim or shoot manually. Enemies drop coins when they die, so run through the field and pick them up. Once you have enough, buy another gun and repeat.
- Spend your starting coins buy the first gun you can afford right away.
- Watch the gun fire it targets enemies automatically, so no input is needed.
- Collect dropped coins walk over them after enemies go down.
- Buy a second gun add it near the first to double your firepower.
- Keep the cycle going coins in, guns out, repeat each wave.
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Where to put your guns
Tips
The early waves are light enough that you have time to think before enemies arrive.
- Place guns in narrow passages where enemies have to funnel through.
- Cluster guns near spots where multiple enemy paths cross.
Cheap guns versus heavy hitters
Table
The game has multiple guns at different price points, each with different firing speed, damage, and cost. Combining them is a valid strategy.
| Cheap guns | easy to buy in bulk early on, covering more ground faster. |
| High-damage guns | expensive but worth adding once you have steady coin income. |
| Mixed loadout | combining both types is a valid tactic. |
Offline defense and idle progress
Summary
Your guns do not stop when you close the game. They continue shooting enemies and earning coins while you are away. Once your base is set up well, logging out and returning later lets you use that banked income to upgrade your defenses without grinding in real time.
- Offline defense guns fire and earn coins even when you are not logged in.
- What to do on login collect accumulated coins first, then spend them on new guns.
When a wave starts overwhelming you
Check
Waves get harder as they go, and there will be a point where your current setup cannot hold.
- Are guns placed where enemies actually walk, not off to the side?
- Do you have enough guns covering the main approach routes?
- Have you mixed in at least one higher-damage gun alongside cheaper ones?
- Did you collect the coin bonus that drops when you clear a wave?
Collecting every gun
TipsThe game is designed so that every weapon can be obtained without spending Robux. More expensive guns appear later, but the offline defense system means your coins keep growing even when you are not playing.
- Log in every day to pick up the coins your guns earned overnight.
- Check which guns you do not own yet and save toward the ones you are missing.
Community strategy ideas
CommunityThese ideas and tips come from people playing the game. Share your discoveries too!
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Build a Gun Army
Glossary
Glossary- Wave
- A single group of zombies that attacks your base together; clearing one wave moves you to the next, harder one.
- Coin
- The currency enemies drop when killed, used to buy every gun in the game.
- Offline defense
- The system that keeps your guns shooting and earning coins even after you log out.
Common questions
FAQDoes it matter where I place my guns?
Yes — narrow corridors and spots where enemy paths cross let your guns fire at more targets at once.
Do I earn coins when I am not playing?
Your guns continue defending and killing enemies after you log out, so coins accumulate while you are away. Log back in regularly to collect what built up and spend it on more guns.
Can I get every gun without spending Robux?
The game is built so that all weapons are reachable through normal coin income.
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