In the context of PC gaming history, the tag "PLAZA" refers to a well-known warez group that specialized in cracking and releasing PC games. The "Update V1.1.0-PLAZA" file often circulates in gaming archives and forums as a standalone patch or a re-packed installer of the game at that specific version.
Note: Always run antivirus scans on scene releases as a precaution, though reputable scene uploads should be clean. Contra Anniversary Collection Update V1 1 0-PLAZA