Do this first
The quick route
- Complete the blue-room pattern puzzle.
- Activate the paired switches at the green structure.
- Use teamwork to reach the elevated mechanical interaction.
- Split telescope and button roles for the remote reward.
- Insert all four rewards near the bridge and collect the key.
- Follow every red key cutter, then use the shaped key at the bridge.
The four opening rewards
The opening zone is a tutorial for Big Walk's main co-op language: describe a pattern, synchronize actions, use another player to reach something high, and split the group between a remote control and reward. Each solved station releases one red reward for the bridge structure.
Why the first key does not fit
The key that drops after all four rewards are placed is unfinished. Put it into the first red cutter and follow the direction marker to the next machine. Continue the cutter route without abandoning the key, then bring its final shape to the drawbridge lock.
What opens after the drawbridge
Lowering the red bridge grants access to the larger island and the tower routes. A useful next objective is the Red Tower because its five rewards lead to the Map Room and a portable coordinate map.
Sources checked
Where this answer comes from
Independent walkthrough of the four opening puzzles, reward structure, and key-cutting route.
ReportingBig Walk Complete WalkthroughCross-check of the opening puzzle mechanics and progression order.
OfficialBig Walk Global AchievementsOfficial confirmation that crossing the drawbridge unlocks Big Walk.
Links and claims last checked August 31, 2026. Community sources describe reported symptoms, not guaranteed fixes.