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Tap an arrow to send it off the board. That only works if the lane in front of it is completely clear all the way out of the grid. If another arrow is in the way, the tap costs you a life. Clear the board to complete the level.

Yes. All levels are in the app and you can play fully offline. Only the online leaderboard needs a connection: if you play offline, the app keeps your result and sends it once you are back online.

A hint points out an arrow you can safely clear right now. You have a limited number of hints; when they run out you can earn an extra one by watching a rewarded video.

On levels with a time limit you get one chance per level to earn extra time by watching a rewarded video. The clock then only starts again once you tap an arrow — just like at the start of a level.

In three ways:

• Daily check-in: open the app on a new day and your lives are topped up to 3. If you already had 3, you get a bonus life on top.
• Moving to the next level: you get one back, up to a maximum of 3.
• Rewarded video: if you've lost all your lives, a video refills your pool completely.

Those are your bonus lives: extra lives saved on top of the standard 3 by checking in every day. By default you can save up to 5 (so 8 lives in total). Reaching a streak milestone raises that maximum.

Your streak counts the number of consecutive days you have opened the app. Miss a day and the counter starts over — but you keep the bonus lives you already saved.

Not straight away: you get one free streak freeze per month. If you miss exactly one day and haven't used your freeze that month, your streak is protected automatically and simply continues.

At 7, 30 and 100 consecutive days you earn a badge and the maximum number of bonus lives you can save goes up permanently.

Go to Settings and change your display name (3 to 20 characters: letters, digits, spaces, hyphens and underscores). That name is visible to other players, so it's best not to use your real name.

Your progress, lives, streak and settings stay on your device. For the online leaderboard we use an anonymous account (a random ID, with no email address or password) and store your display name and result for each completed level. Full details are in the privacy policy.

Local data (progress, lives, settings) is erased by uninstalling the app. To have your leaderboard results removed as well, email smartapps.ev@gmail.com and include your display name.

Check your internet connection: without one, your result is stored and sent automatically later. Only your personal best per level appears in the leaderboard, so a score lower than your own best does not replace it.

Go to Settings → Theme and pick light, dark or “system”. New installs start in the light theme.

The app interface is available in Dutch, English and German. You pick the language in Settings.

Yes, Settings has separate switches for sound effects, background music and vibration (haptics).

Ads keep the app free and cannot be switched off. Rewarded videos are always optional: you choose whether to watch one for a hint, an extra life or extra time.