Simon Tatham's Portable Puzzle Collection contains a number of popular puzzle games for a single player. It currently consists of these games:.
<ul><li>Black Box, ball-finding puzzle</li><li>Bridges, bridge-placing puzzle</li><li>Cube, rolling cube puzzle</li><li>Dominosa, domino tiling puzzle</li><li>Fifteen, sliding block puzzle</li><li>Filling, polyomino puzzle</li><li>Flip, tile inversion puzzle</li><li>Galaxies, symmetric polyomino puzzle</li><li>Guess, combination-guessing puzzle</li><li>Inertia, gem-collecting puzzle</li><li>Keen, arithmetic Latin square puzzle</li><li>Light Up, light-bulb placing puzzle</li><li>Loopy, loop-drawing puzzle</li><li>Magnets, magnet-placing puzzle</li><li>Map, map-colouring puzzle</li><li>Mosaic, number clues puzzle, similar to Mines</li><li>Mines, mine-finding puzzle</li><li>Net, network jigsaw puzzle</li><li>Netslide, toroidal sliding network puzzle</li><li>Pattern</li><li>Pearl, loop-drawing puzzle</li><li>Pegs, peg solitaire puzzle</li><li>Range, visible-distance puzzle</li><li>Rectangles</li><li>Same Game, block-clearing puzzle</li><li>Signpost, square-connecting puzzle</li><li>Singles, number-removing puzzle</li><li>Sixteen, toroidal sliding block puzzle</li><li>Slant, maze-drawing puzzle</li><li>Solo, number placement puzzle</li><li>Tents, tent-placing puzzle</li><li>Towers, tower-placing Latin square puzzle</li><li>Twiddle, rotational sliding block puzzle</li><li>Undead, monster-placing puzzle</li><li>Unequal, Latin square puzzle</li><li>Unruly, black and white grid puzzle</li><li>Untangle, planar graph layout puzzle</li></ul>