Files extracted from ".big" archives (with one of the ".big" utilities listed, below) must first be converted into human-readable form (decompiled) before they can be edited using a text-editor. You can use Age2uN's Lua Decompiler
to decompile the extracted file.
- ModPackager by Relic Entertainment.
- archive.exe by Relic Entertainment.
- Bigar A .big tool for the Mac.