Battle Valley

shoot'em up game for Commodore 64, 1988

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Use Control Port 2.

SCENARIO

The peace summit was successful. An arms treaty has been signed. All medium
range missiles have been destroyed...except for two which have been captured
by a group of terrorists who plan to destroy the Western World unless their
fellow terrorists are released from penitentiary in the United States. Your
task, as mercenary employed by the United States government, is to capture the
terrorist bases in their desert outposts - Battle Valley - and eliminate the
two missiles.

AIM OF THE GAME

The player starts off at his central HQ and his aim is to progress from there
to capture all terrorist bases, three located in either direction. Then the
two missiles have to be destroyed in their silos, found beyond the two
farthest bases. This must all be completed before the countdown reaches zero,
otherwise the missiles will be launched and the world destroyed. In between,
the bases lie many different weapons, which steadily increase in speed and 
complexity as more ground is covered. Most of the weapons can be eliminated by
using the helicopter. The remainder must be destroyed using the tank. Note
that the terrorist bases and the missile silos themselves can only be
destroyed by the tank. The helicopters has a winch which is used to collect
pontoons for mending broken bridges or to collect extra ammunition from
rooftops. The tank collects ammunition when it is halted on the grid at an
ammo dump.

CONTROLS

Joystick in port two only.
After the game has started press fire to access the options page.
[F1] = one/two players.
[F3] = Music on/off.
[F5] = Double fire mode on/off.
Joystick fire to begin game.
When on a base:
left/right = Select tank.
up = Select helicopter.
[INST/DEL] = Transfer to furthest captured base on far side of HQ.
Using a tank or helicopter:
left/right = Move left/right
up/down = Gun barrel up/down (tank)
up/down = Fly up/down (helicopter)
firebutton = Fire shells or rockets.
[F1,F3,F5,F7] = Set speed [F1]=slow [F7]=fast
[SPACE] = Turn tank or helicopter round.
[RUN/STOP] = Pause game (move joystick or press firebutton to continue).
[RESTORE] = Quits current game.
Using helicopter winch:
Press spacebar to halt helicopter.
[F1] = Raise winch.
[F3] = LOwer winch.

DOUBLE FIRE MODE

When double fire mode is set on the option pages, speed and direction can be
changed using the joystick instead of the function keys. For example, to
increase/decrease speed when facing right, push joystick right/left and press
fire twice quickly. To stop, centre joystick and press fire twice quickly.

SCORING

Anti Aircraft Cannon  - 1250 points
Land Based Missile    - 300 points
Missiles Launch Pad   - 2000 points
Missile Carrier       - 1000 points
Missile Launcher      - 2020 points
Storage Silo          - 300 points
Early Warning Station - 2000 points
Rocket Launcher       - 800 points
Anti Aircraft Gun     - 750 points
Defensive Cannon      - 1250 points
Fuel Tanker           - 300 points
Rapid Fire Launcher   - 750 points
Ammunition Truck      - 300 points
Fuel Tank             - 400 points
Military Outpost      - 1750 points
Transmission Mast     - 1000 points

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Some useful keyboard shortcuts
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       [PAUSE] - stop/continue game
          [F9] - quick load game state
         [F12] - quick save game state (still stored after leaving the site)
         [F10] - toggle performance meter
         [F11] - toggle fullscreen mode
  [ScrollLock] - quick switch control ports
    [PageDown] - make a screenshot (320x200)