Solitaire for one, trick-taking against computer players, and a few games from the kitchen table — every card game on crokocat, free in your browser.
The card games here follow the rules you already know. Heartbreak is Hearts, Spade Call is partnership Spades, Fool's Trump is the Russian game Durak, and Thirteen is Tiến lên, the Vietnamese climbing game. You play against computer opponents, and each level is a short hand with a clear target.
For playing alone there are five solitaires — Klondike, FreeCell, Spider, TriPeaks and Pyramid — plus 21 Match, a card puzzle where you clear the board in groups that add up to exactly 21.
Trick-taking: Heartbreak (Hearts) and Spade Call (Spades). Shedding: Wild Eights, Fool's Trump (Durak) and Thirteen (Tiến lên) — get rid of your cards first. Solitaire: Solitaire Blast, Open Cells, Spider Silk, Three Peaks and Pyramid 13. Puzzle: 21 Match.
Yes. All card games on crokocat are free in your browser, with no download and no sign-up.
Yes. Hearts, Spades, Durak, Tiến lên and Wild Eights are played against computer opponents, so you can play on your own at any time.
The standard ones for each game — for example, the Queen of spades is 13 points in Heartbreak and spades always trump in Spade Call. Each game's page lists its rules.