How to Play Walls.gg
Everything you need to know in two minutes.
The board
Nine squares wide, nine squares deep. Player 1 starts in the middle of the bottom row. Player 2 starts in the middle of the top row. Each side starts the game with ten walls.
9 × 9 grid · two pawns · ten walls each
Your turn
On every turn, do exactly one of two things:
- Move one square — up, down, left or right. You cannot step onto your opponent or through a wall, and you cannot leave the board.
- Place a wall — choose a slot between two squares. The wall stays for the rest of the game. You can place a horizontal wall between two stacked squares or a vertical wall between two side-by-side squares.
Wall rules
- Walls cannot overlap or cross another wall.
- Walls cannot extend off the edge of the board.
- Walls cannot completely seal a player off — both pawns must always have at least one path to their goal row. The game checks this with breadth-first search before confirming any placement.
- If a placement would leave either side without a path, it is illegal and you have to pick a different action.
Winning
As soon as your pawn steps onto your goal row — top for Player 1, bottom for Player 2 — you win. The game ends immediately.
Modes
Play vs Bot
Three difficulties. Easy plays mostly random legal moves; Normal walks toward the goal and blocks when you're ahead; Hard runs full path-comparison every turn.
Local 2 Player
Hand the device back and forth. No login. Undo is enabled.
Online Room
Create a room, share the code, play live. Reconnect any time on the same browser.
Daily Puzzle
One pre-set position a day. Solve in the fewest moves. Streak is tracked.
Quick tip
Don't spend walls before you have to. Movement is cheap; a wall is gone forever. Most beginners lose because they used all ten walls in the first half of the game and had nothing left to defend with.
More in the Strategy Guide.