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Image: reddit.com · Video still: Built with Claude: SunaBox- Fluid Sandbox Game built in dedication to 2008's OE-CAKE that runs in your browser!

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SunaBox, a browser rebuild of the 2008 OE-CAKE physics toy

A from-scratch browser rebuild of the old OE-CAKE particle sandbox, with a Classic mode and support for original .oec files, built with Claude.

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Credits

  • Reddit poster cheetoskull Source ↗

Earliest dated source: 19 Aug 2026

The full story

SunaBox is a free browser particle sandbox described as a from-scratch rebuild of OE-CAKE, a 2008 physics toy that "effectively fell off the radar". It has a Classic mode that recreates the original interface and can open the same .oec files people made years ago.

It runs on SunaEngine, which the poster describes as an open source, cross-platform, bit-deterministic WebGPU particle physics engine. The post is flagged "Built with Claude" and a Steam version is planned.

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Sources

From a short post by the maker, so the details are as they tell them.

  • Reddit: Built with Claude: SunaBox- Fluid Sandbox Game built in dedication to 2008's OE-CAKE that runs in yoForum threadreddit.com
    Reddit poster: cheetoskullPosted 19 Aug 2026

    The maker's post on r/ClaudeAI.

    If it disappears: archived copy of Reddit: Built with Claude: SunaBox- Fluid Sandbox Game built in dedication to 2008's OE-CAKE that runs in yo (opens in a new tab)

  • The project: sunabox.devBlog or write-upsunabox.dev

    Linked in the post.

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