Two Dots - Sharpen your puzzle solving skills with a challenging game of dot connection.
Puzzlescript - Open Source HTML5 Puzzle Game Engine
Ordinary Puzzles - A minimalistic puzzle game inspired by Picross and Sudoku.
63 - 63 is a race against the world.
PH Builds a Puzzle - A realtime, collaborative jigsaw puzzle.
Tripods - 2D puzzle game built for the Web.