You tilt the device — there is no on-screen joystick. Hold your phone or tablet flat and tip it in the direction you want the ball to roll. The ball has real weight, so it keeps moving after you level the device out. Ferroll is landscape-only and needs a working motion sensor (accelerometer).

At the start of every level the ball sits inside a glass cage. Tap the cage to shatter it and the level begins. The timer does not run until you do.

You must collect every gem in the level first. The counter in the top-right corner shows your progress (for example 2 / 6). Once it is complete the door opens and you can roll into it.

The game reads your device's tilt relative to how you are holding it, so play in a stable position — sitting down works best. Playing while lying flat on your back is the usual cause of a ball that drifts on its own, because the device has almost no tilt reference in that position.

Stars depend on two things: how much time is left when you finish, and how many times you died. Finishing with over half the timer remaining earns three stars. Dying once caps you at two stars, and dying twice or more — or running out of time — drops you to one star. Only a flawless run with no deaths can set a new best-time record.

Ghosts always warn you before they move. They appear in a wall and glow in place for a moment before charging down the corridor, and you'll hear them if you're close. That pause is your cue to get out of the corridor. Over long corridors they briefly phase out and become harmless — you can pass through them at that moment.

Once per run, yes. When the clock hits zero you can watch an optional video to get 30 more seconds and continue from where you were. The usual 200-point penalty for continuing applies. If time runs out a second time in the same run, the run ends.

Open the in-game Store and tap RESTORE PURCHASES. This re-checks your purchase with the store and re-applies it. Make sure you are signed in with the same account you used to buy it: your Apple Account on iPhone and iPad, or your Google account in the Play Store on Android. Restoring is free and can be done as many times as you need. Purchases don't carry over between iOS and Android.

It removes the full-screen video ads that appear between levels. You can still choose to watch an optional video to earn a free life — that stays available on purpose. Buying it also unlocks the theme selector in Endless mode.

You start with three lives. When you die you can spend one to continue where you fell, or watch a short optional video to continue for free. Since version 1.5, lives also refill on their own: you get one back every 20 minutes until you have three again. The countdown is shown in the Store and on the revive screen. You can also buy life packs in the Store. Resetting your progress will not delete lives you purchased.

First try RESTORE PURCHASES in the Store. If the purchase still doesn't appear, message us on Instagram at @dev.yagiz with a screenshot of your receipt and we'll sort it out. Refunds are handled by the store you bought from:

iOS reportaproblem.apple.com
Android Google Play refund help

Go to Settings from the main menu and tap RESET PROGRESS. This clears your unlocked levels, stars and best times, and it cannot be undone. Your leaderboard records, your purchased lives and your "Remove Ads" purchase are all kept.

Check the speaker button on the game screen (it mutes the current session) and the Music and Sound FX settings in Settings, where each has its own volume. Then check your device:

iOS Ferroll respects the silent switch, so the game stays quiet when your iPhone is on silent.
Android Turn up the media volume with the volume buttons while the game is open.

iOS No. On iPhone and iPad, Ferroll mixes with whatever you are already listening to, so your music or podcast keeps playing. If you'd rather hear only your own audio, turn Music off in Settings.

Scores are submitted automatically when a run ends, as long as you are signed in to the leaderboard service on your device. Sign in, then play one more run.

iOS Game Center: Settings → Game Center.
Android Google Play Games: open the Play Games app and sign in.

Ads need a connection, so the free version asks you to reconnect. The "Remove Ads" purchase disables that message entirely.

iOS Since version 1.4 the game pauses itself when you leave the app, and your remaining time is preserved. If you're still seeing this, please update to the latest version from the App Store.