The game's title screen. A new game is not started automatically, the player must select that option from a drop down list on the menu bar.
Left to its own devices the game plays a short animated sequence showing the different kinds of alien and their points value.
The game is underway. When an alien is hit its eyes open wide before it explodes.
One of the player's canon has been hit.
The game is over because an alien has landed.
The official Game Over screen, from here the player is returned to the main menu.
The player selects the input device from this drop down list.
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