Chaotic couch co-op physics-based moving simulator.
What specific, unique content is in the "6b" version. MovingOut-Day-6b-mac.zip
Based on that file name, this likely relates to the physics-based moving simulator game (developed by SMG Studio/DevM Games) for macOS, possibly a specific day-level mod or a repackaged version. Chaotic couch co-op physics-based moving simulator
Note: If macOS prevents opening, go to System Settings > Privacy & Security and click "Open Anyway". MovingOut-Day-6b-mac.zip
Unzip the MovingOut-Day-6b-mac.zip file (usually by double-clicking).
Custom-built houses or adjusted timer settings for a higher challenge.