Video game container file that stores a game developed by N-Gage, a game distribution service for Nokia mobile phones; contains all packaged data for the game; may be installed after transferring the file to the phone with the Nokia PC Suite software.

Once BLZ files have been transferred to the mobile phone, they may be installed using the BLZ Installer application, which can be uploaded and installed on a Nokia phone. BLZ files may also be extracted on your PC using the BLZ Extractor utility. N-Gage games are also distributed using the .N-GAGE file extension. NOTE: BLZ files are sometimes uploaded to other Symbian OS-based mobile devices to play games. However, this process is unofficial and is not supported by Nokia.

A BLZ file is a video file created by TeamViewer Blizz, a program used to collaborate with other users via video, voice, instant messaging, and screen sharing. It contains a video recording of a session. BLZ files are similar to .TVS files created by TeamViewer.

BLZ files are only supported by TeamViewer Blizz. In order to share a recording created in Blizz with non-Blizz users, save the recording as an .AVI file in Blizz. You can also upload a BLZ file to the TVS to MP4 online program and convert the recorded video to an .MP4 file.