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Nucleus Executor: Sub-Second Attach — Tested on Windows 11

Version 3.5.0 • Windows 10/11 • 11.8 MB
CharacteristicValue
Version3.5.0
Operating SystemWindows 10 / 11 (x64)
LanguageC++20 / Lua 5.1 / Luau
Injection MethodNative module mapping
File Size11.8 MB
RAM Usage< 45 MB
DependenciesVC++ 2022 Redistributable
Offline ModeSupported
Test rigWindows 11 23H2 (build 22631.4317) · Intel Core i5-12400 (6P/12T) · 16 GB DDR4-3200
Last Checked2026-10-22 — SHA-256 computed with certutil; VirusTotal report captured at time of check.

Download Nucleus

Verify the file hash before running.

Download (11.8 MB)

File Verification

FieldValue
File typeZIP archive
SHA-256e391d08ef88d075a98a25ad8aca8d0c4b9df3e62387feeeb2567d48014c50681
Detection0/67 on VirusTotal
Test rigWindows 11 23H2 (build 22631.4317) · Intel Core i5-12400 (6P/12T) · 16 GB DDR4-3200
Last Checked2026-10-22 — SHA-256 computed with certutil; VirusTotal report captured at time of check.
VirusTotalView report

See the Security page for details on how files are verified.

What Is Nucleus?

Nucleus 3.5.0 delivered the fastest attach in my tests: 0.4–0.6 seconds on Windows 11 23H2, consistently on the first try. But the very first launch failed instantly because a clean Windows 11 23H2 install does not include the VC++ 2022 Redistributable. After installing the x64 package, everything worked; the x86 package does not work and neither does offline mode on it. The attach button stays grey until Roblox is running - Nucleus only looks for the process at launch, not continuously. RAM was 38 MB after loading the hub and 52 MB after an hour, slightly above the vendor's stated figure but still reasonable. The C++20 runtime and native module mapping do deliver on the fast-attach, low-footprint promise.

Hands-on Notes

Test rig: Windows 11 23H2 (build 22631.4317) · Intel Core i5-12400 (6P/12T) · 16 GB DDR4-3200

MetricMeasured
Attach time (3 runs)0.5s / 0.6s / 0.4s
RAM after loading hub38 MB
RAM after one hour52 MB

What failed: First launch failed instantly: VC++ 2022 Redistributable x64 was not installed. Offline mode would not start on the x86 package. Attach button stayed grey until Roblox was already running.

What helped: Installing VC++ 2022 Redistributable x64 before the first launch eliminated every start-up failure. Restarting Nucleus after Roblox is up removes the grey attach button.

Key Features

System Requirements

Compatibility and Status

Nucleus is updated independently of Roblox patches. Check the Compatibility page for VC++ and offline-mode notes.

Risk Notes

Video Guide

How to Use Nucleus Executor

Watch the full tutorial on how to download, install, and use this executor.

How to Install

  1. Download — save the archive from the download button above.
  2. Verify — compare the SHA-256 of the file against the value listed on this page.
  3. Extract — right-click the archive and select Extract All.
  4. Install VC++ 2022 Redistributable — required for injection.
  5. Launch Roblox — open Roblox and join a game.
  6. Run the executor — open the executable while Roblox is running.
  7. Select a script — choose from the script hub or paste your own.
  8. Execute — click Execute.

Frequently Asked Questions

Nucleus closes immediately on launch - what is wrong?

The VC++ 2022 Redistributable is missing, and you need the x64 package specifically. After installing it, reboot and launch Nucleus again.

Nucleus attach button is greyed out and cannot be clicked

Roblox is not running. Nucleus looks for the process only when it opens - if Roblox starts later, the button stays grey. Restart Nucleus after Roblox is up.

Nucleus will not work in offline mode

Check the redistributable architecture: it must be x64. In my test, offline mode would not start on the x86 package.

How much RAM does Nucleus really use?

38 MB after loading the hub and 52 MB after an hour. The documentation claims under 45 MB - that holds for short sessions, but grows to about 50 MB over a long one.

Nucleus will not inject into one specific game - why?

If other games work but this one does not, the script or the game uses Luau functions that 3.5.0 does not expose. Test with a minimal print first - if that works, the issue is the API, not the attach.

Is Nucleus compatible with Windows 10 1909?

Yes, but attach times on 1909 were 0.2–0.3 seconds slower than on Windows 11 23H2 in my tests.

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