Puzzles

Puzzles encompasses electronic formats for all sorts of puzzles and brain-teasers, from crosswords to jigsaws. See also Game data files, Saved Games, and Interactive Fiction for other electronic recreation.

General puzzle formats

 * IPUZ (open puzzle format; used for many puzzle types including crosswords)
 * Softdisk Publishing UDF files were used for a number of things in Softdisk publications, including puzzle-type games.

Crossword puzzles

 * JPZ (Java Puzzle)
 * PUZ (Across Lite)

Sokoban

 * SOK (Sokoban)
 * Sokoban XML

Puzzle graphics

 * Puzzle image (X11)
 * Winzle Puzzle

Other

 * Jigsaw (Walter A. Kuhn) (.jig)
 * Secret Photos puzzle
 * Supaplex Level format