To get the Backrooms event in [BACKROOMS] Be an Anomaly or Guard , join the game and wait for the event update content to appear in a live server; recent posts and the game page show the Backrooms update/event is part of the experience and tied to the current version of the game.

What to do

  • Join the game from the Roblox experience page.
  • Look for the updated Backrooms event content in a public server.
  • Play normally as a Guard or an Anomaly ; the game description says players can “Play as a Guard or become the Anomaly.”
  • If you want the event faster, check for servers or videos discussing the newest Backrooms update, since creators are actively covering it right now.

About roles

The game page says if an Anomaly falls, another player can be selected to replace it, so roles seem to be part of the standard gameplay loop rather than a one-time unlock.

That means you usually do not “buy” the event separately; you enter the game, and the event mechanics happen inside matches.

Quick tip

If you are trying to become a specific role, the safest answer from the available info is to keep joining active rounds and pay attention to the role selection flow inside the match, because the current public info does not show a separate manual unlock step.

Sources

  • Roblox game page for [BACKROOMS] Be an Anomaly or Guard.
  • Recent videos about the Backrooms event/update.

TL;DR: join the game, enter an active server, and play through the round; the Backrooms event appears to be part of the current in-game update rather than a separate code or item unlock.