Rail Logic
Lay one quiet railway from A to B, and let the numbers do the thinking.
Coming soon to Google Play and the App StoreWhat you get
- The classic train tracks deduction puzzle: each row and column says how many track pieces it holds. Build one continuous line between the two ends — no loops, no branches, no crossings.
- 240 puzzles across six tiers, from gentle 5×5 grids to demanding 8×9 experts. Every one has exactly one solution, and everything below expert can be solved without guessing.
- A new daily puzzle, the same for everyone, that ramps up through the week.
- Your choice of mistake feedback: see errors as you play, or only when you ask.
- Hints when you are stuck, and your best times, kept on your device.
- Light and dark themes, in 50 languages.
Quietly respectful
Fully offline. No accounts, no sign-ups, no analytics and no leaderboards. Your progress and settings stay on your phone — we run no servers and collect nothing.
Free to play, with a small banner and optional short videos if you would like a hint or a bonus level. One inexpensive purchase removes the ads for good and makes hints free. No subscriptions, ever.
Contact
Questions, feedback, or support: support@ostapenko.studio