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what is the only working acs version in roblox

There isn’t one single “only working” ACS version that works everywhere in Roblox today—what’s “working” depends on your game, avatar type (R6 vs R15), and whether you’re using official releases or community forks.

Quick Scoop: What Version Actually Works?

If you’re asking for a safe, widely used, and still-functional version:

  • Official release : The last official ACS version is 2.0.1 (sometimes shown as 2.0.2 in edited forks).
  • Older but stable : Many developers still use ACS 1.7.5 because it’s simpler, less buggy, and more compatible with older setups.
  • Community/fork versions : There are multiple “ACS versions” like K.M.ACS , RCM , and Kitsune’s ACS , which are heavily modified and often better maintained than the original.

So the short answer:

There is no single “only working” ACS version. The most commonly recommended official working version is ACS 2.0.1 , while many still use 1.7.5 or forked versions depending on their needs.

Why There’s Confusion About “The Only Working Version”

1. Official ACS Is Basically Legacy

The original ACS (Created by 00scorpion00 and dusek_br) hasn’t received major updates in years. The DevForum release page explicitly says older official links are legacy and do not work anymore.

That means:

  • Many old toolbox links for ACS 1.8, 2.0, 2.0.1 point to broken or removed assets.
  • People searching for “the only working ACS” often find outdated videos or forums that still reference those dead links.

2. R6 vs R15 Compatibility

Original ACS was built mainly for R6 avatars. Newer Roblox games often use R15 , which causes issues unless you:

  • Use a fork adapted for R15.
  • Or manually convert/adjust scripts.

Some YouTube guides even say:

  • “ACS 2.0 and 2.0.1 are available now!” but also note you may need to switch your avatar to R6 for full compatibility.

3. Community Forks Are More “Working” Than Official

Because the official ACS is stagnant, the community created:

  • K.M.ACS (prototype/test version)
  • RCM
  • Kitsune’s ACS (R6-only at the time of the video)

These are often:

  • More actively updated.
  • Better optimized.
  • More compatible with modern Roblox systems.

For many new projects, these forks are effectively the “only working ACS-like systems” in practice.

Which Version Should You Actually Use?

If You Want the “Official” Path

  • Use ACS 2.0.1 if you can find a working, non-modded copy.
  • Expect:
    • Mostly R6-focused behavior.
    • Some lag/exploit issues (especially with medic/remotes).
  • Good for:
    • Classic Milsim/FPS projects where you want the “original” feel.

If You Want Stability & Simplicity

  • Use ACS 1.7.5 :
    • Many recent tutorials (including 2026) still cover 1.7.5 setup.
* Less complex, easier to modify.
  • Good for:
    • Beginners.
    • Smaller games where you don’t need the latest features.

If You Want Modern, Actively Maintained Systems

  • Use a fork :
    • K.M.ACS , RCM , or Kitsune’s ACS.
  • These are often:
    • More stable.
    • Better updated.
    • More flexible for R15 or custom setups.

How to Avoid Broken or Malicious Versions

Because ACS is so popular:

  • Many “ACS” models in the toolbox are modded , sometimes with:
    • Viruses.
    • Backdoors.
    • Exploit-friendly code.

To stay safe:

  1. Prefer:
    • Official DevForum release links (when active).
    • Trusted community forks with active Discord/DevForum threads.
  2. Avoid:
    • Random toolbox copies with no source.
    • Versions promoted only on shady forums or unverified YouTube links.

Bottom Line

  • There is no single “only working ACS version” in Roblox.
  • The last official release is ACS 2.0.1 , but many people consider 1.7.5 or community forks like K.M.ACS , RCM , and Kitsune’s ACS to be the most reliably “working” options today.
  • Your best choice depends on:
    • Whether you need R6 or R15.
    • How much you want to modify the system.
    • Whether you prefer official or community-supported versions.

Information gathered from public forums or data available on the internet and portrayed here.