Use a reliable extraction utility like WinRAR or 7-Zip .

Ensure it is actually a .rar file and not a double extension (e.g., pack 1090.rar.exe ), which is a common tactic for spreading malware.

Configuration files that tell a program how to use the pack. Computer Gaming World Issue 175

Image files often used for textures or icons. .md2 / .obj: 3D models.