The Board: The board is 15 files by 9 ranks. The files are split into groups of 5; land, land-sea, and sea. The center 5 files are all land-sea squares.

The Pieces: All of the pieces in the game can enter land-sea squares. Other types of pieces are confined to land or sea, so they can enter any land or land-sea square (land pieces) or any sea or land-sea square (sea pieces). The pieces which start on the sea files are a sea-going equivalent of those found on land, and vice versa; the aircraft carrier is the sea-based equivalent of the tank on land; the missile ship matches up with the cavalry, frigate with helicopter. All of these pieces can enter the land-sea files (5 center files). In the center, those pieces which start on those 5 land-sea files are capable of entering any square on the board (land, land-sea, or sea). These are the marines, GEV (hovercraft), special forces, and HQ pieces.

Gun (long-distance) captures: The following pieces have gun capture capability: Frigate (range 3), Helicopter 3, Aircraft Carrier 2, Tank 2, Missile Ship 2, Cavalry 2, GEV 2, Torpedo Boat 1, Marine 1, Infantry 1. Note that in most cases a piece can actually move/capture further than the range of its gun capture capabilty. For instance, the Aircraft Carrier and Tank move 1-3 orthogonally, but only have a range-2 gun.

Non-Gun variant: A completely different flavor of the game is found when you play without gun pieces (under the variants menu).

To win: Capture your opponent's HQ piece.