Interactive pages with no JavaScript

Puzzles, games, city builders and sortable tables where every click is handled by HTML and CSS alone: radio buttons, checkboxes and clever selectors standing in for scripts.

Today's sudoku 15 puzzle CSS City City populations
Sudoku
Choose a difficulty level:
Easy Medium Hard Expert
Or play the sudoku of the day. For more of a challenge, try Sudoku Farm.
Games, math & chess
  • ChessAn almost full-featured game against yourself or a friend.
  • Chess puzzlesFind the best move.
  • Fox and GeeseTrap a CSS-powered fox with your geese.
  • 15 puzzleWith hints from a solver written in CSS.
  • Trig quizTest your knowledge of trigonometric values.
City builders
  • CSS CityDrag the roads, place homes, offices and parks, and watch the homes-and-jobs map.
  • 3D cityBuild blocks in a 3D city you can rotate, zoom and pan, with population and jobs counted in CSS. Other sizes: 2×2, 4×4, 6×6, 8×8.
  • City DesignerMake your own kinds of lots, then download a city that runs on CSS alone.
  • 3D City DesignerDesign blocks, place buildings (or upload your own 3D models) and download your 3D city.

The two designers are the only pages here that use JavaScript, to build your city; what you download needs none.

Maps & charts
Sortable stats for each MLB season since 1871:
Small demos