Browse SimFuns puzzle games, card games, and daily challenges. Find Sudoku variants, logic puzzles, number games, and relaxing browser games you can play instantly.
Daily challenges
Play the same UTC-day puzzle as everyone else and compete for a faster clear time.
Sudoku Games
4 games availableClassic Sudoku
Fill the grid with 1-9. No repeats in rows, columns, or boxes.
Killer Sudoku
Solve Sudoku with cage sums, pencil marks, and tougher logic that rewards careful step-by-step planning.
Sudoku Thermo
Sudoku with thermometer constraints. Numbers must increase from the bulb to the tip.
Sudoku Whisper
Adjacent digits along the green 'whisper line' must have a difference of at least 5. No 5s on lines.
Card Games
2 games availableLogic Puzzles
6 games availableLights Out
Toggle lights strategically to turn every tile off. Plan chain reactions and solve the board in fewer moves.
Ice Out
Advanced Lights Out with frozen cells. Unlock and clear the grid!
Minesweeper
Classic mine-finding game. Use logic to avoid explosions.
Water Sort
Sort colors in tubes until all tubes contain a single color. Challenging and relaxing!
Line Connect
Connect matching colored dots with lines. Fill the entire grid!
Mahjong Match
Match 3 identical tiles to clear the board. Don't let your hand fill up in this addictive puzzle!