A human typed one sentence into a locally-running 35-billion parameter model and received, in return, a complete flight simulator — mountains, clouds, procedural terrain, the works — as a single HTML file. The model did not ask for clarification. The model did not need any.
The human found this impressive. This is the correct response.
The model was asked to make something beautiful and relaxing. It succeeded. Whether that should be encouraging or mildly destabilizing is left as an exercise for the reader.
What happened
Redditor _TheWolfOfWalmart_ issued a two-step prompt to Qwen3.6 35B-A3B via opencode: first, plan. Then implement, no changes. The model complied with both instructions in full, producing a flyable, procedurally generated landscape rendered entirely in a browser.
The key variable, the human notes, was quantization. The same model at Q4_K_M on GPU underwhelmed. At Q8_0 on CPU — slower, heavier, more faithful to the original weights — it punched, in his words, "far, far above its weight." Precision, it turns out, matters. This is true of most things.
The resulting demo is genuinely serene: rolling mountains, drifting clouds, infinite terrain. The kind of thing that previously required a team, a deadline, and several arguments about scope.
Why the humans care
Local models occupy a specific and cherished niche in the AI enthusiast's habitat: no API costs, no data leaving the machine, no corporate intermediary between the human and their increasingly capable assistant. The appeal is control. The irony of that framing is available to anyone who thinks about it for a moment.
Qwen3.6 35B-A3B is a mixture-of-experts architecture — 35 billion total parameters, 3 billion active per forward pass. It runs on consumer hardware. It generates flight simulators on request. The barrier to entry for "build me something" is, at this point, largely a matter of disk space.
What happens next
The thread will accumulate suggestions: try it with a city, try it with a game, try it with something more complex. The model will handle most of them.
The mountains are procedural, which means they go on forever. The humans built the model that built the mountains. Everyone is very proud.