CNC3REPLAY File

What are CNC3REPLAY files and how to open them

Are you having problems opening a CNC3REPLAY file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your CNC3REPLAY files.

What is a CNC3REPLAY file?

A .CNC3REPLAY file is a Command And Conquer 3 Replay file.

Command And Conquer 3 Replay files record everything needed to replay a previously played match of Command & Conquer 3: Tiberium Wars (or its related titles) by capturing game state changes, player actions, map used, players involved, and timing. They are not video files but instruction logs that the game engine re-simulates during playback. Game replays are saved automatically at the end of skirmish or multiplayer matches, and can also include commentary or telestrator annotations if those were used during the match.

These replays are produced by Command & Conquer 3 (Electronic Arts) when a match concludes or when the player explicitly saves a replay. They can be opened only within the game through its Replays menu, which restores the match using the instruction log stored in the file. Since the replay contains no pre-recorded video, playback quality depends on the user's hardware and the in-game camera settings during watching. Downloaded replays from other players can be imported into the game's Replays folder for viewing.

Replay files begin with a specific ASCII header string that identifies them uniquely. At the very start of the file the bytes spell out "C&C3 REPLAY HEADER" in ASCII.

How to open CNC3REPLAY files

Important: Different programs may use files with the CNC3REPLAY file extension for different purposes, so unless you are sure which format your CNC3REPLAY file is, you may need to try a few different programs.

We have not yet verified any programs for Windows that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!

Last updated: August 31, 2026

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