[Wave 5] Idle Defense [Alpha] Script for Roblox (2025)

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Current image: [Update] Idle Defense [Alpha] Script

[Update] Idle Defense [Alpha]

Game Link

Idle Defense [Alpha] is a strategic tower-defense style Roblox game where players summon units, upgrade defenses, and survive increasingly difficult waves of enemies. If you want to progress faster, buy units instantly, or automate your upgrades, an Idle Defense script can give you a huge advantage.

Below is the best working Idle Defense [Alpha] script from trusted uploader CatBoyy. It is fully updated and works on both PC and mobile executors.

What Is Idle Defense [Alpha] in Roblox?

Idle Defense is a wave-based defense game where your goal is to survive enemy attacks by:

  • Placing units
  • Upgrading defenses
  • Managing resources
  • Unlocking stronger characters

The game becomes harder with each wave, which is why many players use scripts to automate grinding and unlock stronger units faster.

Using an Idle Defense script allows you to:

  • Auto-buy units
  • Skip manual grinding
  • Access debugging or hidden functions
  • Speed up your wave progression

Why Use Idle Defense Scripts?

Idle Defense scripts allow players to:

  • Progress faster through waves
  • Save time by auto-buying units
  • Obtain units without grinding
  • Enhance gameplay efficiency
  • Automate repetitive tasks

Scripts make the game smoother, easier, and more enjoyable for players who want quick progress.

1. Idle Defense Script – Auto Unit Purchase

Supports: Mobile and PC

Features

  • Auto Buy Units
  • Instantly interacts with Main Unit Shop
  • Works in all wave levels
  • No key system
  • Fast and lightweight script

Script (Copy & Paste)

game:GetService("ReplicatedStorage"):WaitForChild("BuyUnit"):InvokeServer("MainUnitShop", -0/0)

Idle Defense Script Comparison Table

FeatureStatus
Auto Buy UnitsYes
Auto Upgrade SupportNot Included
Auto FarmNot Included
Mobile SupportYes
PC SupportYes
Key SystemNo
Wave AutomationPartial

Requirements

To run this script, you need an executor that supports InvokeServer such as:

  • Delta (Mobile)
  • Solara
  • Codex
  • Hydrogen
  • Evon
  • KRNL
  • Fluxus
  • Synapse X

Any executor with basic script execution support will work.

How to Use Idle Defense Scripts

  1. Join the game Idle Defense [Alpha]
  2. Open your script executor
  3. Paste the script
  4. Execute it
  5. Units will be purchased automatically depending on the shop system
Want to learn more? See how to run scripts in Roblox step-by-step.

FAQs

Does this script work on mobile?
Yes, the script is lightweight and fully compatible with mobile executors.

Is this script keyless?
Yes, no key system is required.

Is the script safe to use?
It is from a trusted uploader, but always use scripts at your own risk.

Does it auto-farm waves?
No, this script focuses on auto-buying units. More advanced hubs may add auto-farm features in upcoming updates.

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