Components

• 4×4 board.
• 15 light and 15 dark pieces:
  • 5 Squares
  • 5 Triangles
  • 5 Cylinders

Overview

• Minimalist 2-player abstract strategy game.
• Players are architects competing to build Towers.
• The last piece determines the opponent's possible moves.
• The first player to control three Towers wins the game.

Game play

• White starts by playing any piece on any space. If White plays a Square, they cannot play a Square as their second piece.
• Players take turns to play one of their pieces.
• Each space of the board can support only one Tower.
• Each Tower is made of one piece of each kind:
  • Square
  • Triangle
  • Cylinder
• Note: each Tower can have either colour of pieces.
• Note: pieces may be played in any order.
• If the active player cannot play according to the last piece's rule, they may play on any empty space.
• A Tower is controlled by the player with the most pieces.
  • i.e. 2 or 3 pieces.

Square

• The opponent must play in an orthogonally adjacent space.
  • i.e. vertically or horizontally.
• Note: White cannot place two squares in a row as their first and second move.

Triangle

• The active player selects the orientation.
  • Must point to at least one space.
• The opponent must play in the line indicated by the Triangle.
• Note: Triangles cannot be re-oriented.

Cylinder

• The opponent must play on the same space.

Game End

• The first player to control three completed Towers wins.
• If the active player has no possible moves the game ends with tiebreaks:

Tiebreaks

1. Most completed towers.
2. Most two-piece towers.
3. Most one-piece towers.