Quarto- The Game of Fours

Quarto is one of the most elegant strategy games ever designed. Simple to learn, endlessly deep.

16 unique pieces. 4 attributes. 1 winner.

Each piece is defined by four binary attributes — size, color, shape, and fill. On your turn, you choose a piece for your opponent to place. The catch: you might just be handing them the winning move.

GAME MODES

• Human vs AI — four difficulty levels from beginner to expert
• Pass & Play — challenge a friend on the same device
• AI vs AI — watch two AIs battle it out
• Online Multiplayer — play friends via Game Center

FEATURES

• Beautiful piece rendering with transparent hollow tops
• Drag or tap to place pieces
• Threat visualization — see danger before it's too late
• Undo and move history
• Win detection across all 19 winning lines including 2×2 squares — the surprise win most players miss
• Confetti celebration on every win
• Interactive tutorial for new players
• Full How to Play guide with animated examples

PREMIUM (one-time purchase)

• 4 premium themes: Neon, Crystal, Marble & Metal
• Game Replay — watch any completed game move by move
• Statistics Dashboard — track your wins, streaks & records

Quarto was invented by Blaise Müller. This app is a loving port of an original 1999 school project implementation, rebuilt for modern iOS with all the depth the game deserves.