Flip bridges. Land every sum.

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Swipe through all 7 screenshots of Sumbriska.

What Sumbriska does

A quiet, clever number puzzle where every bridge you flip brings an island closer to its perfect sum.

In Sumbriska, each island shows a target number. Flip bridges to send numbers between islands until every sum lands exactly where it should. The rules take a minute to learn, and the boards reward careful, unhurried thinking.

Every board you solve helps build your own island harbor. Travel through six themed regions, from Lantern Harbor and Orchard Isles to Canal Quarter, Tidal Marsh, Lantern Reef and Twin Beacons. Each one changes your island as you clear it.

Quick answers

How much does Sumbriska cost?

Free to download (optional in-app purchases) — as listed on the App Store.

What does Sumbriska need to run?

An iPhone on iOS 18.0 or later. The download is about 5 MB.

What is Sumbriska for?

A quiet, clever number puzzle where every bridge you flip brings an island closer to its perfect sum.