Backrooms added $3.3M on Day 17, taking its US domestic total to $160.0M and worldwide gross to $262.3M.

The horror film built on internet lore continues to show impressive staying power well into its third week.
| Day 14 | $3.6M |
|---|---|
| Day 15 | $4.4M |
| Day 16 | $4.4M |
| Day 17 | $3.3M |
The film continues to perform strongly in its third week. The $3.3M figure on Day 17 reflects sustained interest from both core horror fans and newer audiences. Chiwetel Ejioforβs grounded performance remains a key factor in keeping the film engaging despite its surreal premise.
Market-wise, the hold is particularly good in suburban and urban multiplexes. The film has benefited from strong word-of-mouth and social media engagement. With a current 17.01x ratio, Backrooms remains one of the most profitable theatrical releases of the year relative to its budget.
The film is showing healthy resilience for a horror title at this stage. Its ability to maintain solid numbers into Week 3 is a strong indicator of long-term audience engagement.