Copycat's Phenomenon — Multiplayer Pack v1.2

Ready to Play

This download contains the full v1.2 game plus the required BepInEx plugins preconfigured for multiplayer. Just extract and launch — no manual setup needed.

Press F5 in‑game to open the server browser.
If join doesn’t happen immediately, wait ~1 minute and try again.
After a round ends, you can join when the server count shows 0.

Download .rar

Install & Play

Download the .rar using the button above.
Extract the archive to a folder of your choice.
Run the game executable from the extracted folder.
Press F5 to open the server browser and join a server.

Tip: If a join stalls, wait up to a minute and retry. After a round, join when the server count shows 0.

Version 1.2.3 — Assembly Patch

If you are on game version 1.2.3, you can enable multiplayer by replacing the game assembly with the patched file below.

Download Assembly-CSharp.dll

How to apply

Locate your game folder.
Open Copycat's Phenomenon_Data/Managed.
Backup the original Assembly-CSharp.dll.
Replace it with the downloaded Assembly-CSharp.dll.
Start the game and press F5 to open the server browser.

Server visibility vs. joinability: Servers without port forwarding can still appear in the browser, but only servers with proper port forwarding can be joined. Hosting via a VPN can work, but if you have router access, forwarding ports is recommended.

To host: go to Multiplayer → Create a server. Others can join through the server browser. Dedicated servers are not expected any time soon.

Description

Enemies are "killable": when a monster's HP reaches 0, it will "die" and despawn until its next respawn time.

Because the documents and main game script are not fully functional, use the window in the top‑right of the screen to track how many files are left and whether the exit is closed or open (escape possible or not).

Preview

Multiplayer lobby view with player list — Lobby — wait for your friends to join; when everyone’s ready the game starts.

In-game server browser showing available servers — Server Browser — open with F5; choose official or community servers.

In-game view during a round — In‑Game — enemies, objectives, and status UI.

Known Issues

Enemies can run through doors.

This issue affects the current multiplayer-enabled v1.2 build.

Hosting Notes

The masterserver and official servers are hosted by HellsGate Gaming. Community hosting is supported via the in‑game server creation flow.

To host, open Multiplayer and click Create a server.
Servers may appear in the browser even without port forwarding, but only port‑forwarded servers are joinable.
If your server doesn’t show, try port 28777 and forward it on your router/firewall.

Dedicated servers are not expected any time soon.