File archive compressed with Bzip compression; often created on Unix systems with the standard bzip utility; incorporates the Burrows-Wheeler algorithm as well as Run-Length Encoding (RLE), which compresses better than Gzip (. How to open BZS files. ✅ BlueZone Script BZS file is a BlueZone Script. Files with bzs suffix are in most cases scripts for BlueZone terminal emulation software by Rocket. You can find what program a BZS file can be edited, converted or printed with.