Pasianssi-pelit.com, developed by Simiade, offers free Klondike Solitaire to play online. The site presents the classic single-player card game with large cards and a choice of draw-one or draw-three play. Players can select among several scoring options, including standard timed and untimed scoring, casino scoring, or no scoring, and use controls to start a new game, undo moves, view statistics, and adjust settings such as sound and language.

The site also explains Klondike rules, including how to build foundation piles by suit from ace to king and arrange tableau cards in descending order with alternating colors. Its help section provides gameplay guidance and keyboard shortcuts, while player statistics track wins, scores, streaks, time, and moves. In addition to Klondike, the site lists other free games, including FreeCell, Spider Solitaire, Mahjong, Snake, and Minesweeper. The service is available in multiple languages, and users can contact Simiade by email with questions or comments.