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!
Arcade Games
5 games availableTetris
Classic block-stacking puzzle game. Clear lines and beat the rising pace!
Block Puzzle
Drag blocks onto the board to fill rows and columns, clear space efficiently, and keep your score climbing.
Stack 3D
Stack moving 3D blocks as high as you can! Slice overhangs, trigger perfect combos with classical music melodies, and build your tower.
Slime Drop Tower
Stack bouncy jelly slimes as high as you can! Master the pendulum swing, trigger squishy combos, and reach the cosmic stars.
Luban Tower
Master ancient Chinese mortise and tenon architecture! Time the swinging pendulum crane, drop flying eaves and pillars, and build an immortal pagoda.