ENGINE ROOM

Frame: 0

Seed: 12345

Vessel Y: 0

Vessel V: 0

Inputs: 0

SPACE: 0

Show captain's inputs (SPACE) in replay

PROVING LOGBOOK...

Logbook stores last and best runs separately for each current direction.

RESIDUALS · gate clearance

Clear a gate to log clearance. Replay reproduces the exact same series — the Logbook, with error bars.

RESIDUALS · histogram clear a gate to log

Gate: 0 / 10

CORE ENGINE ACTIVE

PORT SIGNAL: DESTINATION REACHED

CHARTER VIOLATION

Vessel collision detected.

BULKHEAD τ · FLAPPY SHIPThe PBC charter declares the rules; Bulkhead τ enforces them.
Thrust against the current. Clear every gate to reach port.
Too hard? Tune the dials below — wider gates, gentler current, shorter trip.
UP current is trickier: the same thrust rhythm feels inverted, so try DOWN first.
▶ Press SPACE to begin

MISSION CONTROLS tune until you can win

Gate width: 160px

Current: 0.25

Distance: 10 gates

DIFFICULTY

Vertical swing between gates: low = gates stay level (easy); high = extreme up/down jumps (hardest).

Swing: 50%

Thrusts (SPACE): 0

CHARTER (PBC)

Source: flappy.pbc.md

FLPY-RUL-001

Current Constant: ---

FLPY-RUL-003

Safe Envelope: ---px

FLPY-RUL-007

Destination: --- gates

TAMPER DEMO

Drag current past the charter range (0.15 to 0.40 in magnitude): Bulkhead mode rejects it (snaps back), while Vibe mode accepts the violation. [SHIFT / R] reverses current.

Vessel Current:

⚠️ CHARTER BREACH REJECTED

ACCURACY · awaiting gate

DIFFICULTY · harbor calm