This suggests Rev3 was designed for the post-server era. It was built to survive the death of its own matchmaking.
Uncompress the contents using 7-Zip or WinRAR (version 5.50+). Bioasshard Arena 1.0.241-Rev3.7z
The "Arena" version of the project is not a demo but a completed proof-of-concept intended to refine the engine's core systems. While the Arena lacks a formal narrative, the developers have confirmed that the main game ( Bioasshard ) will feature a plot set shortly after the events of Resident Evil 5 . Future updates are expected to include male protagonists and female enemies. This suggests Rev3 was designed for the post-server era
Since this appears to be a mod, standalone game build, or fan project (possibly a Resident Evil / Survival homage based on the name), the guide focuses on generic installation, setup, and troubleshooting. The "Arena" version of the project is not