Open Junction
No original ShortLine files needed. The included replacement package supplies its own graphics, text, six-station board, and silent audio backend.
About 1.8 MB. Keyboard and mouse recommended.
The game downloads only after you press Play. Sound starts off.
Controls
| Choose Go in the main menu to start | |
| Space — switch between management and construction | |
| Construction: hover over a buildable diamond, left-click to cycle rail shapes, then right-click to place the selected rail | |
| Management: left-click switches and signals to route trains | |
| 1, 2, 3 — set simulation speed | |
| Click the in-game menu button to pause, Save, or return to the menu |
Use the in-game Pause menu’s Save action, then Archive and Go from the main menu to resume. Saves stay in this browser. Use Export saves in the player toolbar for a portable backup before clearing browser data; production export/delete/import restoration passed. Save inside the game before exporting a backup. Clearing browser data can erase progress.