Identify the lock
“Locker code” can refer to the first-floor ammunition-bag dial, a shotgun cabinet or even a different safe. The full game and the free Prologue are separate Steam releases, so a video of one may not solve the other. Identify the product, room and kind of input before entering digits. Use the version-specific answers below; a current full-game shotgun combination has not yet been confirmed.
The developer’s full-game discussion distinguishes a first-floor Locker Room clue from a shotgun cabinet discussed by players. A separate safe has a dial that reaches 60, while a player’s locker only reached 35. Those physical differences matter more than an unlabeled number found in search. The puzzle index keeps their evidence in separate entries.
Prologue shotgun cabinet: 4123
For Fear the Timeloop - Prologue (Steam app 3642660), enter 4 → 1 → 2 → 3 at the four-digit shotgun cabinet. The developer's June 16, 2025 answer explicitly gives this combination and explains the “Four Remain” clue: match its descriptions with what happened in hospital rooms 101, 102, 103 and 104. The developer also confirms that changing a correct wheel produces a click.
The Spoons & Ducks Prologue walkthrough independently demonstrates the same acquisition route. After the parking-area sequence, use the videotape in the basement boiler room to advance to chapter 2 and obtain basement-exit access. On floor one, go to the lobby, take the right corridor and pass through the resuscitation room into the lounge. Enter 4123, open the cabinet and pick up the shotgun; this is the Boomstick achievement route in that recording.
This is the shotgun cabinet's numeric combination, not the ammunition-bag locker dial. It is supported for the Prologue; the current full game's equivalent cabinet is not version-matched by those sources. Source check: October 22, 2026.
The confirmed prologue combination
The developer’s Prologue answer gives the first-floor ammunition-bag locker as 30 left → 10 right → 20 left. The answer is explicitly tied to the 2025 Prologue and includes the directions of rotation. The developer also points players to a basement clue for that locker. It is not a verified combination for every locker in the 2026 full game.
Another part of the Prologue discussion refers to a later cabinet absent from that free release. The developer stated that an illogical combination was changed for the full game. That establishes a version risk rather than a usable new number. If your current object is not the Prologue ammunition-bag dial, record its actual name and location before using another guide.
Full-game first-floor clue
In the full-game progression discussion, the developer directs players to basement Medical Storage for the first-floor Locker Room clue. That is an official location hint for the complete release. It does not itself publish a full current turning sequence. The exact input for that full-game dial is 待确认.
A February 4, 2026 shotgun clip visibly enters 4123 and then shows the open cabinet and “Picked up shotgun x1”. Its description does not identify the Steam app or patch, so the clip corroborates the input and result without establishing that the current full-game build uses it. For the full-game dial, follow the Medical Storage clue; for the Prologue shotgun cabinet, use the separate answer above.
Do not confuse the safe
The developer’s separate safe hint uses a dial that reaches 60. A player in the same discussion clarified that their locker only reached 35, and the developer said they were discussing different objects. Those are different locks, not conflicting answers for one locker. If your dial ends at 35, do not force a safe solution onto it.
The safe-code page also documents an unresolved 0-versus-01 last-digit disagreement. That dispute is about a candidate safe and has no evidentiary value for a locker. The most reliable approach here is object identification plus the developer’s location hints. Anything more precise for the current full-game cabinets remains 待确认.