Blue Divide – Nurikabe puzzles with procgen islands for Mac and iPad
Hi HN, I made a small game in Swift to visualize Nurikabe puzzles in 3D, using SceneKit and Metal shaders with some SwiftUI on top for buttons and hints. It's currently available for free in App Store. I've tried generating islands like this a few times before, where the whole board is just one big mesh, but I struggled with the shorelines (especially in corners) and also to make the islands somewhat unique and interesting. This time I got inspired by Oskar Stålbergs "dual grid" approach (https://x.com/OskSta/status/1448248658865049605) which made it a lot easier I…
Blue Divide – Nurikabe puzzles with procgen islands for Mac and iPad launched on November 17, 2025 with 6 votes, #2,995 of 9,795 launches that month and more than 75% of that year's launches.
What it does
Download Blue Divide - Nurikabe by Blit AS on the App Store. See screenshots, ratings and reviews, user tips, and more apps like Blue Divide - Nurikabe.
Puzzle Developer Blit AS Language EN English Size 17.9 MB iPad, Mac Blue Divide is a peaceful logic puzzle game inspired by the classic Japanese puzzle Nurikabe. Each puzzle begins as a tranquil sea — and hidden within it lie islands of varying sizes, waiting to be revealed. Use logic to mark which tiles belong to land and which to sea. Each numbered cell tells you how large its island must become, and all the surrounding water must stay connected as one continuous ocean. - Handcrafted puzzles ranging from gentle to challenging. - Peaceful visuals and ambient sound that let you relax and focus. - Logical, no-guess gameplay faithful to the Nurikabe puzzle’s elegant rules. Blue Divide offers…from apps.apple.com
In the maker’s words, at launch
Hi HN, I made a small game in Swift to visualize Nurikabe puzzles in 3D, using SceneKit and Metal shaders with some SwiftUI on top for buttons and hints. It's currently available for free in App Store. I've tried generating islands like this a few times before, where the whole board is just one big mesh, but I…
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