How transport unlocks work
Major movement upgrades in Big Walk usually follow the same loop: find a control panel, complete nearby puzzles for red panel pieces, take the golden key, run it through key cutters, then use the shaped key on the lock.
ScreenHype's launch guides document this pattern for the Crosswalk, Map Room, trains, chairlift and Yellow Tunnel. This page summarizes the route order without replacing the deeper puzzle index.
Unlock checklist
Use this table when your group wants to know where the next route opens. Exact puzzle steps are indexed on the Puzzle Solutions page.
| Unlock | Key source | Important coordinate | What opens |
|---|---|---|---|
| Crosswalk | Beach control panel | Control panel 3550, 1100 | The first raised bridge beyond the tutorial area and access toward the Red Tower. |
| Map Room | Red Tower control panel | Map Room 3560, 1425; Red Tower 3670, 1400 | The Map Room, handheld map, compass and extra laser pointers. |
| Trains | Blue Tower control panel | Main station 3380, 1740; Blue Tower 3540, 1850 | Three train routes that loop the map after unlocking. |
| Chairlift | Green Tower control panel | Station 3950, 1950; Green Tower 3930, 1900 | Chairlift travel across the later mountain route. |
| Yellow Tunnel | Yellow Tower control panel | Tunnel 3500, 1620; Yellow Tower 3310, 1560 | A later tunnel route tied to a secret area and the final radio channel. |
Key cutters
After a control-panel key is released, it usually will not fit the lock immediately. ScreenHype repeatedly notes that nearby key cutters shave the key into the correct shape and reveal arrows pointing to the next cutter.
The safe rule is simple: after every cut, look at the top of the cutter, follow the arrow, and do not run ahead with the key before the group agrees on the next landmark.
Train notes
ScreenHype reports three trains: red, yellow and green. After unlocking, they loop in a fixed direction, and a lever in the first carriage can be held to stop the train.
Radio transmitters also appear in the back carriage of all three trains, which makes the train loop useful for regrouping separated players.
Spoiler boundary
This page names unlocks and coordinates. Full per-puzzle logic belongs in the Puzzle Solutions index so players who only need route direction do not accidentally read every answer.
Sources & attribution
Crosswalk control panel route and key-cutter pattern.
ScreenHypeHow to Unlock the Map Room in Big WalkLyssa Greywood - 2026-08-03Red Tower route and Map Room unlock.
ScreenHypeHow to Unlock the Trains in Big WalkLyssa Greywood - 2026-08-04Train station location, train behavior and Blue Tower route.
ScreenHypeHow to Unlock the Chairlift in Big WalkLyssa Greywood - 2026-08-04Chairlift station and Green Tower route.
ScreenHypeHow to Unlock the Tunnels in Big WalkLyssa Greywood - 2026-08-04Yellow Tunnel route, Yellow Tower and late-game context.