Railweave at a glance

The game loop

• Design one railway junction, start traffic, read its behaviour and rebuild the network with what you learn.
• U/min counts every locomotive and carriage that successfully leaves the map; smoother flow produces a better result.
• There is no money, advertising, upgrade tree or paid advantage — geometry, routing and capacity decide the outcome.
• The simulation uses a deterministic fixed step, so the same network and timetable produce fairly comparable results.

Maps, cities and trains

• Five fixed maps — Britain, Czechia, Poland, Germany and the Netherlands — have their own cities, portals, routes, terrain and benchmark.
• You connect cities by colour-coded routes; single- and double-track portals define arrival and departure directions.
• The permanent fleet of trains 01–70 keeps its number, category and appearance across countries.
• A fixed timetable gradually introduces more trains and adds carriages, asking the same junction to carry an increasing load.

Tracks, bridges and tunnels

• One gesture builds one neutral track between exact nodes, continuing straight or at a 45° angle.
• Straight track keeps full speed while 45° and 90° curves have readable slowdowns shared by the simulation and visuals.
• Bridges and tunnels offer Steep 60%, Medium 80% and Gentle 100% profiles plus a selectable functional middle length.
• The surface, bridge layer +1 and tunnel layer −1 are physically separate, allowing routes to cross without a false connection.
• Previews, deletion, rebuilding and precise ramps use the same authoritative geometry as live traffic.

Switches and interlocking

• At switches, you assign colour-coded routes to exact exits and can set arrival ordering or priority.
• Traffic management is absent from Build; only during Run can the two-column Routes tab switch every active connection live between FIFO — first in, first out — and City passing.
• A pass happens only after a faster train on the same route and in the same direction actually catches a slower one; the next shared city safely changes one departure order, never the order of trains on the track.
• City passing may be active on at most five routes at once; the counter shows used and remaining capacity and switching back to FIFO immediately frees a slot.
• The chosen mode applies at both endpoint cities and remains saved for later levels until the player changes it again; on the first version 4.7 load, older saved choices return to FIFO once without losing construction or progress.
• An orange outer locomotive outline and an orange code on the same service mark a faster train from the moment a slower leader actually constrains it until the faster train enters the next city.
• Automatic node interlocking reserves conflicting movements, maintains spacing and prevents simultaneous unsafe passages.
• Trains accelerate, brake, slow through curves and ramps, and respond to the available route length ahead.
• A technical pre-run check finds disconnected routes, invalid switch routing and other operational blockers.
• The network cannot be edited and time speed cannot be changed during a run; per-route departure mode is the only live traffic choice.

Levels, goals and repair

• Every map has 150 authored levels and its own increasingly demanding traffic plan.
• The introductory level only asks you to reach the target U/min; from level 2, a fifteen-minute attempt must hold at least 65% of the reference maximum for a full 60 seconds.
• Later levels expand traffic with new trains, routes and carriages while progressively involving more cities.
• Completing the final level unlocks repeatable endless improvement on the same map.
• A collision or blockage opens diagnostics and repair mode, letting you return to construction without losing the whole junction.

Saving, offline play and cloud

• The active junction autosaves to browser IndexedDB and resumes from a stable construction state after a reload.
• Railweave is an installable PWA that can launch the game and every map offline after one complete online load.
• Signed-in players sync junctions to the cloud with safe revision and cross-device conflict handling.
• My Junctions lets players load, rename, duplicate and delete saved maps.
• Every guest New game gets its own identity, and genuinely constructed anonymous junctions count toward the public total.

Accounts and security

• Registration uses email, password, a public nickname and email-address verification.
• Optional two-factor authentication supports an authenticator app and one-time recovery codes.
• Sensitive actions require recent authentication, are rate-limited and are recorded in the security audit.
• Public nicknames and text are checked against links, team impersonation, invisible characters and abuse.
• Players can safely sign out, reset a password or delete an account after confirmation; cloud data remains separate from local play.

Seasonal leaderboards

• Every map has a separate seasonal leaderboard for the best U/min from level 2 onward.
• The initial view loads the TOP 20 and adds 20 more positions on demand up to the TOP 500.
• A signed-in player always sees their exact true rank, even outside the currently loaded list or beyond the TOP 500.
• Only results replayed and approved by the trusted server worker enter the ranking; the client cannot award itself a score.
• A season change starts a new ranking without deleting historical scores or saved junctions.

Community

• Players can publish an automatic game-board snapshot as Advice or Showcase with a short question or description.
• The community overview supports filtering, sorting, comments, reply notifications and incremental content loading.
• A player with a nickname and at least one verified 50 U/min result can post; any signed-in player with a nickname can comment.
• Content can be reported, and moderators can hide, restore or address it with the user under the public community rules.
• Snapshots preserve the map and U/min at capture time without exposing private data or the full saved state.

REC and result sharing

• Optional REC keeps a rolling twelve-second simulation buffer on the device without uploading it to the server.
• A result can become a fourteen-second clip or a branded PNG result image with the final score and Railweave identity.
• A trusted replay marks only its exact captured attempt Verified and supplies that score; unbound results remain Unverified and the introduction is Unranked.
• Both media use 9:16, 4:5 or 16:9 with a choice of whether to show the nickname.
• Creation runs locally; the finished file can be downloaded or, when supported for that file, shared through the native device menu.
• Live rendering, video and the result image use the same tracks, bridges, tunnels, trains, layers and speed profiles.

Languages, controls and performance

• The complete game and public website are available in Czech and English with their own localised URLs.
• The interface supports light and dark appearance, music, fullscreen mode and remembered player preferences.
• Battery Saver lowers rendering frequency without changing the speed or outcome of the deterministic simulation.
• Responsive controls work with mouse, touch and keyboard shortcuts, including pan, zoom and pinch gestures.
• Map data and heavier optional features load separately to keep initial startup and dense high levels responsive.

Project support and tickets

• Railweave is an independent family project, and voluntary support helps fund continued development and operation.
• A supporter can choose a specific permanent train, carriage and exact seat across the whole Railweave network.
• A purchased seat may carry a public nickname and short approved message without affecting game rules or performance.
• Every booking receives a collectible digital ticket and secure booking code; signed-in players can see all their tickets together.
• Seat availability is verified on the server, and payment never unlocks a gameplay advantage.

Codex, media and public website

• The game Codex explains tracks, speed, trains, switches, node interlocking, targets, U/min and incident recovery.
• The public site provides About, News & Tips, Press, Credits, Fleet, Support and legal and community-rule pages.
• The press kit provides ready descriptions, facts, brand assets and available images or videos for download.
• Official links connect Railweave to social channels, while bug reporting prepares a technical email without publishing a saved map.
• OpenAI Codex is credited for development assistance; game rules and active product state remain versioned and publicly documented.

Three ready-to-use shorter versions

These descriptions can be used directly in a profile, post, article or discussion; the complete list above remains the source for current features.