CSS-Only 3D/2D 1D Chess
Full chess game state in pure CSS—no JS—which shouldn't be possible.

CSS-only Flappy Bird is a fun five-minute novelty with no practical use beyond the demo itself.
Frontend developers interested in CSS techniques
CSS-only games · No-JS demos
Here is how I made it https://blog.scottlogic.com/2026/03/09/noJS-3-flappy-bird.ht...
Full chess game state in pure CSS—no JS—which shouldn't be possible.
Single-file UI language for AI generation, but no evidence it reduces tokens vs normal dev flow.
You get a single-file editor + live preview and an "Ask Assistant" pane so you can prompt or tweak a small game (the Simon board and WebAudio tones run in the browser). The interface is friendly and immediately usable for teaching or tinkering, but it's essentially a focused CodePen-style playground — useful and charming for lessons, not a novel platform — and would benefit from clearer onboarding, save/share, and structured exercises.
Gopher-to-HTML proxy brings the dead protocol to modern browsers.
5MB native C++ UI rendering HTML/CSS, but the framework itself is private.
Isometric 3D Sokoban in pure CSS is a technical flex, but it's still just Sokoban.