3DI File Extension

Delta Force Object Collection
- File Type 3di
- Developer NovaLogic, Inc.
- Popularity
- Application Delta Force
- Category Game Files
What is a 3DI file?
Files with the 3DI extension are specifically tied to Delta Force Object Collection, a Game Files type, and there are 1265 files in this category.
The Delta Force Object Collection (3DI) was developed by NovaLogic, which created file format and 8 programs to work with them.
3DI file support extends to various operating systems, including Windows. To others a 3DI file, you can choose from 3 programs such as Delta Force, Delta Force 2 and Delta Force: Land Warrior.
How to open a 3DI file?
If you cannot open a 3DI file, it is most often due to missing software. Select a program from the list according to your operating system. Then go to the official website of the program developer, download it, and install it on your device.
Thanks to their popularity, Delta Force, Delta Force 2 and Delta Force: Land Warrior are often the go-to programs for managing 3DI files. If you need the newest version of Delta Force, just access the NovaLogic website. From there you can download the installer compatible with all systems.
Once Delta Force is installed, the OS should configure it as the default tool for opening 3DI files.
Make Delta Force the default 3DI viewer
Change the default app to open files on Mac
- Right click or use Control + Left Click on the desired 3DI file to access a dropdown menu of actions;
- Choose "Open in Application" and click "Other";
- Towards the bottom of the window, find the "Enable" menu, which is already set to the default option, "Recommended Programs";
- In this menu, select "All Programs" and search for Delta Force. Check the box next to "Always open in app" to make it the default option.
Change a default app in Windows
- Start by right-clicking on your 3DI file, then select the "Open with" option and choose "Choose another app" from the menu that appears;
- Inside the popup window, scroll through the list of applications and specifically choose Delta Force as the application to associate with your 3DI file;
- Check the "Always use this app" checkbox and click "OK".
Finding answers to 3DI file problems
If 3DI files are giving you trouble, small modifications to your software can help. Check out the troubleshooting tips below to fix these issues.
What can lead to sudden Delta Force crashes?
Insufficient updates for NovaLogic products can cause Delta Force to crash. Be sure to regularly install the latest software updates.
A computer restart is often the key to solving numerous common problems. That’s why, it is recommended to restart the computer before making any changes to the software settings.
What is the recommended approach to repair a damaged 3DI file?
Use a recovery program to open the damaged 3DI file, and in the menu, click "Repair" to start the repair operation. Wait for the recovery process to finish as it will automatically restore the damaged game files.
What are the ways to check if my 3DI file is damaged?
Characteristics of corrupted 3DI game files can include:
- The file encounters problems during the opening process or shows error indications;
- The file causes Delta Force or other software to hang or crash during various operations;
- An unexplained increase in the size of the 3DI file;
- Actions performed on the file result in the appearance of error notifications;




