Free Anomaly Detection Rig: find all four Home Alone crossovers

Available · Researched October 26, 2026 (UTC) · Evergreen guide · AI-assisted.

Quick answer

Enter Home Alone: Anomalies from The Hollow, complete the four-character crossover tracker, and confirm the official Crossover Hunter [The Hollow] badge. Then return to Floor 4 in The Hollow and use the hidden reward room to claim the Anomaly Detection Rig. Roblox confirms the requirement to find four crossovers; the names and timing details below come from current walkthroughs and may change if the experience is updated.

Requirements

Use the same Roblox account in Home Alone and The Hollow. You do not need to buy the accessory: its catalog page is off sale because it is earned as an experience reward. Keep the tracker visible and follow the instructions shown during each encounter.

Steps

1. From The Hollow hub, enter the Home Alone: Anomalies portal.
2. Play through the night and complete the house tasks; do not leave when a visitor appears.
3. Watch the lower-right tracker. Recent walkthroughs identify The Watcher, The Inspector, The Werewolf, and The Mimic, but the in-game counter is the authoritative reference.
4. Handle each encounter according to the on-screen prompt. Current guides place an Inspector phase near 3:00 a.m. and recommend hiding indoors, away from windows, when the game tells you to do so.
5. Continue until the round ends and check the Crossover Hunter [The Hollow] badge (ID 434944108901978). Sources disagree on whether partial progress persists, so do not assume you can split the encounters across sessions.
6. Return to The Hollow, open Floor 4, and find the hidden reward room. Interact with the crossover pedestal to add the Anomaly Detection Rig to your inventory.

Why the badge check matters

The badge proves that Home Alone recorded all four encounters; the accessory is claimed afterward in The Hollow. Treating these as separate steps prevents replaying a full night when only the pedestal remains.

Common mistakes

Do not confuse the Boo & Bub room with this pedestal, rely on a fixed visitor order, or leave after the fourth tracker entry without checking the badge. An “off sale” catalog label does not mean the reward has ended.

How to verify success

Look for the badge on your profile, then check the inventory for Anomaly Detection Rig (asset ID 118189638405576). If you have the badge but not the accessory, return to the Floor 4 pedestal before replaying Home Alone.

Checklist

• [ ] The tracker recorded four crossovers.
• [ ] The badge appears on your account.
• [ ] You returned to Floor 4.
• [ ] You interacted with the correct pedestal.
• [ ] The accessory appears in your inventory.

Related reading

See the official accessory page and the official experience. Roblox announced that The Hollow rewards can be collected until November 2, 2026 at 12:00 p.m. PST.