Compatible emulators

Synopsis

The game level can be selected at the beginning of the game or after game select button has been pressed. Press the buttons from 1 to 10.

Bounce Back - Sets boundaries around perimeter of the TV monitor screen. Example: Starship immediately reverses direction after reaching boundary. Normally perimeter boundaries do not exist.
Negative Gravity - Sun radiates gravity outward to perimeter boundaries of the TV monitor screen. Normal sun state radiates positive gravity (positive gravity is inward toward the sun).
Zero Gravity - Sun does not radiate gravity.
Black Hole - Invisible sun with any selected gravity.
Space Stations - Two space stations orbit around sun. Each player is designated a specific space station on which he may land for repairs, fuel and shells. When player starship touches opponent's station it is immediate annihilation.
Unlimited Supplies - Unlimited fuel and ordnance (fire power).
Stars - Remove stars from playfield.
Strong Gravity - Unusually strong positive gravity.

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