The SGA file format is a proprietary archive format developed by Relic Entertainment for use in their real-time strategy games, most notably the Warhammer 40,000: Dawn of War series, Company of Heroes, and Age of Empires IV. These files act as containers that store a wide variety of game assets, including 3D models, textures, sound effects, music, map data, and game scripts. By bundling these assets into a single compressed or uncompressed archive, the game engine can manage resources more efficiently, reducing file fragmentation and improving load times. SGA files are essential for modding communities, as they must be unpacked to modify game balance or add custom content. Tools like Archive.exe (provided by Relic) or community-made utilities like Corsix's Mod Studio are typically used to explore and extract the contents of these archives. The format has evolved over the years, with different versions corresponding to different game engine iterations, specifically the Essence Engine, meaning that a tool designed for an older game might not be compatible with SGA files from a newer title. Because it is a specialized gaming format, standard decompression software like WinZip or WinRAR generally cannot open these files without specific plugins or dedicated extraction software.