The First Connection.

Find a fragment. Light up the platform. Hand the phone to a friend and say, “Your turn. Help me figure this out.” Or discover every treasure solo.

Download or change my train · Offline packs

Choose your train. Download the adventure.

Includes all five First Connection rounds, actual route stops, Navigator clues, hints, original illustration, treasure, explanations, procedural 3D models and synthesized sound. No account, Fare or train ownership needed.

Train and reviewed direction

CONNECTION AVAILABLE · Initial download needs service. After download, the entire adventure works in this open game without service, including solo and same-device cooperation. Keep this tab open: offline reload/reopening is not supported.

My downloaded packs · 0

Size is measured during download, not an invented estimate. Browser storage can be evicted; avoid private browsing. No approved photograph is published: a labeled original illustration keeps this adventure complete. Online mastery assessments remain in the existing game. Finish an earlier hunt before replacing its pack.

Your field kit

Visual quality Use accessible 2D view Reduced motion

Fixed camera. Tap tiles then spaces, drag with a mouse, or use Tab and Enter. Escape pauses instantly. Reduced motion keeps the light and reward changes without movement.

Offline packs require an initial connection. Closing or reloading offline is not supported in this version.

The First Connection · Honest readiness report

Implemented: five free rounds, solo and same-device Navigator/Detective play, automatic role changes, always-accessible clues, three then five actual stations, reviewed transfer or clearly labeled terminal fallback, original illustration, Atlas fitting, 3D light/case responses, optional synthesized sound, pause/resume, device saves and queued deterministic account validation.

Entire downloaded adventure is available offline while this game remains open. Offline reload, cold reopening, account sign-in and the existing complete online Passport still need connection. The in-adventure device Passport works without service.

No approved photographs are published. The visual-detail round uses labeled original illustrated art, not a fabricated photo approval. Approved-photo adventures are deferred.

Build and lint passed. The 4-train pack returned reviewed three-/five-stop puzzles and a real transfer. Read-only validation accepted the complete correct solution, rejected wrong station order, rejected an outdated route version and rejected a mismatched train/direction. These checks changed no player records. End-to-end play, downloaded browser sizes, account sync retries and physical devices have not been tested by the builder.

Use the Testing Agent to complete solo and Ride Together, switch roles, pause mid-board, resume after disconnecting, finish the case, open the device Passport, reconnect and retry sync twice without duplicate treasure. Verify touch/keyboard and the 2D fallback; use real iOS Safari and Android Chrome for offline/background checks.

Short hunts award no Fare, train unlock or full-line mastery. Existing 2D challenges and earlier progress are preserved; no live player records were changed during development.