Linkhallow: Hex Board Game

Hex, the connection board game where every move is attack and defence: link your two edges before your rival links theirs. 7x7, 9x9 or classic 11x11 boards against a Monte Carlo AI in three strengths, or a friend. Free, no ads, no tracking.

Hex is the game where every move is both attack and defence. Amber wants a chain of stones from the top edge to the bottom edge; Teal wants one from left to right. One of them always gets there, because the board cannot be blocked for both.

Linkhallow puts Hex in a dim lantern hall with glowing edges and gem stones. The AI thinks with Monte Carlo tree search on a time budget and answers intrusions into its bridges, so it plays real shapes rather than random stones.

• Three board sizes: 7x7 for quick games, 9x9 and the classic 11x11
• AI with three strengths: Easy, Normal and Hard think for longer and choose more carefully
• Friend mode: two players on one screen
• Swap rule: optional; the second player may take over the opening stone, mirrored
• Undo and highlight: take back moves, and the winning chain lights up
• Keyboard or touch: a cursor with Enter, or tap the cells; settings and your record are saved

Code and text written with AI assistance; checked by PN Scripts with automated tests. Every shape is drawn and every sound synthesised by code; there are no AI-generated image or audio files.

Controls

• Mouse / touch: tap a cell to place a stone; tap the buttons for settings
• Arrow keys / WASD: move the cursor, Enter / Space: place a stone
• N: new game, U: undo, X: swap the opening (when the swap rule is on)
• 1: opponent, 2: AI strength, 3: board size, 4: your side, 5: swap rule
• P / Esc: pause, M: sound

Made by PN Scripts.