Opening C4S Files

The C4S file type is primarily associated with Clonk.

C4S	File extension: C4S
	File type:	Scenario

What is a C4S file

C4S files mostly belong to Clonk by RedWolf Design GmbH. This is the game file most often distributed.

How to open a C4S file

You need a suitable software like Clonk to open a C4S file. You need a suitable software like Clonk from RedWolf Design GmbH to open a C4S file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your C4S file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a C4S file directly in the browser:. Just drag the file onto this browser window and drop it.

Online C4S Text Viewer

Choose your .c4s file to analyze

or drag and drop it here

Online File Viewer

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.C4S File Won't Open? Here is What You Can Do

A .C4S file can originate from different programs and isn't universally openable.

Identify the Source: Receiving it from a gamer or a modding forum suggests it's a Clonk Scenario file.
Check the Header: Open the file in a text editor or hex viewer to inspect the first bytes.
- "PK" indicates a ZIP archive (common for Clonk scenarios).
- Readable text suggests a configuration script.
Use the Original Software: The original program is usually required. Try Clonk Rage, OpenClonk, or ask the sender.
Use this Webpage: Drag and drop your .C4S file onto this page to detect its format, extract metadata, and preview contents.

Technical Data for C4S File Extension

File classification:

Game

Identifier:

Hex: 1E 8C 08 00 00 00 00 00 00 0B EC (provided by TrID database)

Related files:

c4v, c4z, ce, zip, c4p, c4g

a c4s Scenario is a special file format by RedWolf Design GmbH and should only be edited and saved with the appropriate software.

How to solve problems with C4S files

Associate the C4S file extension with the correct application.
Update your software that should actually open scenarios. Because only the current version supports the latest C4S file format. Search, therefore, e.g. on the RedWolf Design GmbH manufacturer website after an available Clonk update.
To make sure that your C4S file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .C4S file online - secure, fast, and no downloads needed.