What you need

• A flat surface
• A set with an even number of equally cut blocks (also refered to 'pieces' or 'stones') [for example Jenga]
• At least 2 players, each with at least one body part capable of holding a block in a steady position (further refered to 'hand')

Setup

1. Define the playing area - All players agree on the flat surface(s) where blocks may be placed
2. Determine turn order - Choose clockwise or counter-clockwise rotation
3. Prepare block pile - Keep all unused blocks in a central pile for players to grab from

Gameplay

1. Starting the game

Each player places 1 foundation block - freely anywhere within the defined playing area on the ground.

2. Build-up phase

1. Draw 2 blocks - from the unused pile.
2. Place the first block - on top of the previous player's second (most recently placed) block.
3. Place the second block - on top of any previously placed block in the structure.
4. Stability check - Wait 5 seconds (if you are on planet earth, otherwise calculate the wait time S for surface gravity G you are currently experiencing with this formular: ). If no blocks other that the foundation blocks touch the ground, the turn is complete.

3. Placement Rules

1. One hand only - All blocks must be placed using only one hand.
2. Double placement - Both blocks may be placed simultaneously if possible with one hand, provided at least one block goes on top of the previous player's last piece.
3. Flat surfaces only - Blocks can only be placed on the designated flat playing area or on other stable blocks with one side parallel to the ground. They can bridge multiple pieces at the same level, but must lay on top of a target block.
4. No support - Players cannot use a second hand or any other object to support the structure while placing blocks.
5. While holding the piece - a player is free to push other pieces around as long as the player only touches them with the piece itself.
6. After releasing - the block must stand securly on another block. The player is not allowed to touch the structure for the duration of the stability check.

4. Build-down phase

1. The game switches to the build-down phase - if no pieces are left to draw from the pile. Or when all players wish it to end. The last player who placed a block begins.
2. Each turn a player must remove a piece from the structure - by grapping it and move it outside the playing field, receiving one point. Then the next player does the same until no blocks are left.
3. If other pieces are standing ontop the piece - while beeing moved outside the playing field, the player gets an additional point for each.
4. It is not allowed to grind a piece on the ground - a player must hold the piece at least one width of a block when moving it outside the playfield.
5. If a player touches a piece - the player must use this piece this turn and remove it. It is allowed to push other pieces around as long as the player only touches them with the piece they hold.

5. Game over

1. All pieces taken during the Build-down phase - the player(s) with the most points win the game.
2. The game ends immediately when - any block other that the foundation blocks touch the ground during a player's turn or the subsequent stability check.
3. When a foundation block moves outside the playing field - while in Build-up phase, the game also ends and the causing player loses.
4. If a player disrupts the playing field - causing blocks to lean or fall. They immediately lose and the game ends.

6. Point buy-in (optional)

1. Before the game starts - players agree on a point buy-in value. For each point a player receives a block for their own pile of block from only they can draw during their turn.
2. If a player has no blocks left in their personal pile - they can buy more blocks from the bank or pass until the other players finish the phase.
3. If a player does not wish to place a piece during build-up - it is allowed to pass.
4. If a player causes a game over codition - the remaining blocks in the structure are split equally as points to all other players. If the remaining blocks cannot be divided without "left over" (n % playerCount != 0), the causing player keeps that left over points (or the bank).