Tertia

A daily card puzzle for pattern-spotters. Now with multiplayer: race a friend to 10 trios, team up in Co-op, or play solo at your pace.

Find the trio. Train your eye. Build a streak.

Tertia is a fast, focused pattern-matching card game for iPhone and iPad. Twelve cards on the table. Three cards form a valid trio when, for every attribute — shape, count, color, and fill — they're either all the same or all different. Easy to learn. Fiendish to play under a clock.

— FOUR DISTINCT MODES —

• Practice — Get instant feedback on every pick. Tertia tells you exactly why a trio works or doesn't, attribute by attribute. The fastest way to internalize the rules.

• Normal — The pure experience. Take your time. Use a hint when you're stuck.

• Time Attack — Five minutes. No hints. Every match buys you extra seconds and feeds your combo multiplier. Chain
trios in five-second windows to climb to ×2, then ×3.

• Daily Puzzle — The same deck for every player, every day. Solve at your own pace, share your result, build a
streak. Miss a day and the streak resets. Show up tomorrow and it builds again.