Card games that start with O

A quick climbing game where you replace played cards with a higher combination of the same color or number.

Predict exactly how many tricks you will win, then navigate the hand to hit that bid.

Turn market cards into goods in a chain of medieval buildings, guessing which resources will appear.

Make pairs and draw from neighbors while trying not to finish with the unmatched card.

A 17th-century Spanish trick game where one player takes on the other two; the source of many later games.

Uses a 40-card pack. Pagat lists it as L’Hombre.

A tiny roguelike: explore a dungeon deck, roll your hero’s dice into card challenges, and level up before the boss.

Uses dice alongside the cards.

A single-night hidden-role game: role cards are viewed or swapped in the dark, then everyone votes.

Escape a labyrinth of dreams by playing cards in color runs to find eight doors before the deck runs out.

Play cards face down in a shared line, then decide when to reveal them for attacks, assassinations, and plots.