QPON’s free games and tools collection is a family-oriented website featuring browser-based games and creative activities developed by QPON, originally for his wife and grandchildren. Shared online, the collection offers a wide range of pastimes, from classic puzzles and board games to practical utilities and experiments. Visitors can play Sudoku, Othello, Slitherlink, jigsaw puzzles, 15-puzzle, Tetris, and several mahjong-style games, including Shanghai, Sichuan solitaire, and a memory game.

Some titles include difficulty options, computer opponents, or timed competitions with national rankings. The site also provides a drawing tool with CAD-like features, plus options for animation, coloring, and movies. Practical offerings include printable personalized calendars, lunar phase displays, biorhythm charts, and custom Google Maps.

Other activities include a visual illusion gallery and a practice experience based on Japan’s driving-license renewal cognitive test for older adults. The collection also showcases Scratch programming projects, including a falling-block game inspired by Puyo Puyo. Together, these free resources combine entertainment, creativity, and brain-training activities for a broad audience