Clock patience in vanilla JavaScript and CSS: lay the cards out like a clock face and turn them over hour by hour.

Dots and Boxes against a computer opponent: draw lines between dots and complete more squares than your rival.

A card battler: draw cards for attack and defense but bust if your hand reaches 13 or the Death card appears.

The classic five-in-a-row abstract strategy board game, played against a computer opponent.

Aces Up patience drawn entirely in CSS with no images: discard cards until only the four aces remain.

Rock, paper, scissors against a small neural network that learns from your last moves to predict what you will play next.

Rock, paper, scissors against a computer opponent that remembers your patterns and tries to predict your next throw.

Golf solitaire in pure CSS and JavaScript: clear the tableau by playing cards one rank above or below the waste card.

Tic-tac-toe against a minimax computer opponent.