A category tells you what kind of game something is, and whoever uploaded the game is the one who chose it. A collection answers the other question: I want something like this. Solitaire on this site is spread across three categories at once, so these shelves are cut by hand, across the filing, and every one of them is written rather than generated.
9 collections.
Klondike, Forty Thieves, Demon, Tripeaks, and a few hands against the computer.
17 gamesFifteen of them, and almost no two agree on what to do with the idea.
15 gamesThirteen games about holding a line you never move from.
13 gamesAngle, power, fire, watch. Eleven games where the shot is the whole decision.
11 gamesForty-three games made for one month of the year, and thirteen of them are new.
43 gamesForty-seven games for two people sitting at the same computer. No accounts, no rooms, no waiting.
47 gamesFive platformers where the floor is a trap and the first death is part of the tutorial.
5 gamesSeventeen puzzles where the wrong first move ends the level, not the turn.
17 gamesTen games about winter without a single Santa in them: plows, sleds, snowboards and tiles.
10 games