Software & Apps File Types What Is a FORGE File? How to open, edit, & convert FORGE files by Tim Fisher General Manager, VP, Lifewire.com Tim Fisher has 30+ years' professional technology support experience. He writes troubleshooting content and is the General Manager of Lifewire. our editorial process Facebook Twitter LinkedIn Tim Fisher Updated on June 23, 2020 File Types Design Cryptocurrency MS Office Windows Linux Google Drive Apps File Types Backup & Utilities View More Tweet Share Email A file with the FORGE file extension is an Assassin's Creed Game Data file used in the Assassin's Creed video game. This is a container format that may hold sounds, 3D models, textures, and other things used by the game. They're typically pretty large, usually over 200 MB. This article is about the FORGE file, not the Minecraft Forge modding API. How to Open a FORGE File FORGE files are produced by Ubisoft's Assassin's Creed and are not meant to be opened manually by you, but instead used by the game itself. Some might be used with Prince of Persia, too. However, there is a small, portable tool for Windows called Maki that can open them. It should be able to extract some or all of the different components that make up the file. You'll need a program like 7-Zip to open the RAR archive that Maki is saved within. If you're having troubles with a specific FORGE file, it's best to either reinstall the game or, if you're Steam, to validate the game files in an effort to replace the broken or missing file. Although we don't have a FORGE file to test this, it's possible you can just use a free file extractor to open it—our favorites are 7-Zip and PeaZip. However, because those programs don't recognize the format by default, instead of just double-clicking on the file and expecting it to open, you'll have to open one of those file extractors first and then browse for the file from within the program. In a sort of opposite situation, you may find that you have more than one program installed that supports this format and one is the default...the one you don't want to be. Changing which program is the default "open" program for files that use this extension is pretty straightforward. How to Convert a FORGE File Popular file formats can usually be converted to other formats using a free file converter, but we don't know of any dedicated converters meant especially for FORGE files. Plus, our understanding of this format is that it shouldn't exist in any other except the one it's currently in since no other program should have any use for these files but Assassin's Creed. However, if there is any program that can convert it, it's most likely Maki, mentioned above. Otherwise, the software that opens a file is normally capable of saving it to a different format, but it's unlikely the Assassin's Creed game itself has such a capability.