Someone used Claude Fable 5.2 to generate a stunning underwater sim that’s only 97 KB in size

Published Nov 15, 2026, 3:12 AM EST Simon is a Computer Science BSc graduate who has been writing about technology since 2014, and using Windows machines since 3.1. After working for an indie game studio and acting as the family's go-to technician for all computer issues, he found his passion for writing and decided to use his skill set to write about all things tech. Since beginning his writing career, he has written for many different publications such as WorldStart, Listverse, and MakeTechEasier. However, after finding his home at MakeUseOf in February 2019, he would eventually move on to its sister site, XDA, to bring the latest and greatest in Windows, Linux, and DIY electronics. Sign in to your XDA account Summary Claude generated a swimmable underwater world in a single 97 KB HTML file. It contains no images, models, sounds, or libraries; all visuals are code-generated on load. Started from one prompt, and Claude iterated to add a menu, collisions, and quality controls. It's no secret that people are using Claude to generate some really stunning projects, but the more people play with it, the more impressive said projects are becoming. For instance, someone has managed to use Claude to generate an HTML file that plays a really nice-looking underwater sim, and the kicker is, it's only a 97 KB HTML file. Someone used Claude to squash a swimming sim down to 97 KB It's a very impressive feat Over on the ClaudeAI subreddit, user Any-Reputation8118 showed off their stunning project. You can take a look at it in the video above. It's hard to believe that all that manages to squeeze into a 97 KB HTML file, but that's exactly what they did: Abyssal Garden is an underwater world you can swim through in the browser: kelp forests, a sunken ship, a stone whale tail, manta rays and schools of fish, and light rays from the surface. It's all generated by code on load, so the project is one 97 KB HTML file with no images, 3D models, sound files or libraries. Claude wrote all the code, and even checks its own work to prevent any visual weirdness from seeping through. It initially came from a single prompt (which you can read in the project's GitHub repo), with later prompts adding a menu, collision, and quality controls. Otherwise, if you'd like to give it a try yourself, head over to the Abyssal Garden webpage and go for a swim.