Number gates require teams of three to five people, and the sum of the numbers on the wristband must match the door number; This links grouping decisions to locked room puzzles.
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Content and inclusion
Number gates require teams of three to five people, and the sum of the numbers on the wristband must match the door number; This links grouping decisions to locked room puzzles.
DS version computation and dual-end authentication
The 2009 DS version explains that the participant's wristband numbers are first summed together; If the total is two or more digits, add the digits together to calculate the digit roots used for door number matching. The game provides a numeric root calculator to help select groups of three to five players that meet the door number.
Members who meet the door number must open the door with RED authentication next to the number door, then use the time-limited transmitter on the DEAD stop wristband on the other side of the door. The introduction requires disarming within 81 seconds; exceeding this time will cause the small bomb inside the body to detonate.
Related entries
- Related works:Extreme escape: 9 hours, 9 people, 9 doors
References
- English Wikipedia '999' characters and rules
- GAME Watch: Spike reveals 999 DS characters and device information (2009-10-14, Kito Shirou)
- Inside: Introduction to the DS Digital Root and Authentication Rules in '999' (2009-12-02)
Data compiled on: 2026-10-16.