Credits and data sources

Thanks to the open projects that make this site possible.

Puzzles

All puzzles are generated and verified by Puzoro's own code. Sudoku, Killer Sudoku, Nonogram, Kakuro and Star Battle are traditional puzzle genres; we use their generic names.

Map and country data

Made with Natural Earth. Free vector and raster map data at https://www.naturalearthdata.com (public domain).

Country names, aliases and facts come from Wikidata (https://www.wikidata.org), available under CC0 1.0.

Boundaries shown on maps are approximate and do not imply any opinion on the legal status of any territory or its borders.

Pictures in nonograms

The 15×15 drawings in the picture puzzles were drawn for Puzoro; nothing is copied from elsewhere.

Design

Icons, the logo and illustrations are original work drawn for Puzoro. Body text uses your device's system fonts. A few big headings use small subsets of three free fonts (SIL Open Font License 1.1) served from this site: Jua (Korean), Mochiy Pop One (Japanese) and Lilita One (English and Spanish). No font is loaded from another server.

Software

The site is plain HTML, CSS and JavaScript with no third-party runtime libraries. Testing uses Puppeteer (Apache-2.0).

Last updated: 2026-10-19