|
Increase the effectiveness of your ship's weapons, and your ammunition
supplies by collecting the powerups which appear after each destroyed
alien attack wave.
Power Ups
After you destroy each wave of aliens, a power-up will become available.
They will appear at the location of the last destroyed alien, and fall
down for you to collect. By collecting these power-ups, you can upgrade
your weapons (making them more powerful as described above), or increase
your ammunition supplies. Try not to miss them!
| Ship Controls |
| key |
action |
| [left] or J |
left |
| [right] or L |
right |
| [up] or I |
shields |
| [down] or K |
teleport |
| Weapon
Controls |
| key |
action |
| [space] |
fire blaster |
| W |
launch missile |
| D |
lauch/detonate cluster bomb |
| A |
fire laser |
| Game
Controls |
| key |
action |
| P |
pause game |
| S |
toggle sound on/off |
|
Weapons
|
|
weapon
|
key
|
description
|
|
Blaster
|
<space> |
This is your ship's main weapon, and is the only weapon for
which you have infinite ammunition. This weapon be upgraded
to fire more shots at once. |
|
Missile
|
W
|
This weapon launches a missile which will attempt to home
in on the nearest alien. Can be upgraded to improve the missile's
homing ability. Ammunition for this weapon must be collected. |
|
Laser
|
A
|
This weapon fires a singe laser beam, which will cut through
anything it comes into contact with. If well amied, this weapon
can destroy several aliens with a singe shot. It can be upgraded
to increase the size of the beam (potentially increasing the
number of kills with each shot). Ammunition must be collected
for this weapon. |
|
Cluster Bomb
|
D
|
The most powerful weapon available to you, this weapon is
designed to destroy several aliens with a single deployment.
Press the 'd' key once to lauch the weapon, and while the bomb
is in flight, press the 'd' key once again to detonate it. Once
detonated, the bomb will create an expanding shockwave that
will destroy all aliens it engulfs. This weapon can be upgraded
to increase the size of the detonation shockwave (making it
easier to destroy more aliens with each detonation). Ammunition
must be collected for this weapon. |
|
Defensive Measures
|
|
measure
|
key
|
description
|
|
Shields
|
<up>
|
Your shields will reamin activated as long
as you hold down the 'up' (arrow) key. While the shields are
active, you will not be harmed by alien weapons. However, you
will not be able to fire your own weapons while your shields
are activated. Additionally, you have a limited amount of shield
energy (as indicated by a bar at the bottom of the screen),
and once your shield energy is used up, you will not be able
to activate your shields until you collect more shield energy
power-ups.
|
|
Teleport
|
<down>
|
By pressing the 'down' (arrow) key, you can teleport your ship
instantly to the other side of the screen. Use this feature to
quickly escape bombardments by alien weaponry, or to collect power-ups
on the other side of the screen. The teleportation device also
has the beneficial side effect of confusing alien missiles which
are already in flight, making them unable to home in on you. |
|
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