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Swipe from the ball towards the goal. Where you lift your finger is where you aim, a faster swipe is a harder shot, and a curved swipe bends the ball. The power bar turns red when you over-hit it.

When the rival runs up, swipe in the direction you want to dive: left, right, up or down. A tap keeps you big in the middle. Go too early and the shooter can place it the other way.

In this version rivals are recorded penalty sets that come with the game or are generated on your device, each with its own favourite corners. Online duels will arrive in an update.

Wins earn rank points (RP), losses cost some, but your first loss each day is free. Seasons last six weeks; at the end you get a badge and coins for your best tier and drop two tiers.

An optional monthly or yearly subscription: double coins, daily bonus coins, a rival scouting hint and the Aurora set. It never changes the result of a duel. Cancel any time in your App Store or Google Play subscriptions.

Open Settings → Restore purchases while signed in with the same Apple or Google account. Coins from coin packs are added once and can't be restored after they are spent or the app is deleted.