Use one recorder
Have one player update this checklist only after the group confirms an interaction.

Browser-local Manor run tool
Track the dated Manor sequence: Red Key, Yellow Key, two levers, Green Key, Blue Key, and Purple Key. The tracker remembers this device only and does not claim fixed spawn rooms.
Use the right version
Backrooms, Poolrooms, and The End are officially named, but their objective orders are not verified by this checklist.
Live run state
Next: Red Key
Multiplayer handoff
Have one player update this checklist only after the group confirms an interaction.
Say the color and holder name when a key changes hands so two players do not repeat the same search.
Keep another player aware of the holder's area. If the holder dies, the group can return to the last known location.
They share one video chapter, but they remain two checklist objectives.
Troubleshooting
Method
Five named key colors and two lever chapters in the dated Manor sequence.
A carried key remaining on the floor after its holder dies; treated as a player observation.