 The scope of the game is to complete all the five levels as fast as you can,
saving your space capsule from monsters attacks and preventing 
their boarding on the earth. Pay attention! Every level is harder than the 
former. To help you against the space monsters there are some usefull bonus,
all droppable from monsters. 'M' is the multi-shot bonus. With this bonus 
activated you will be able to shot multiple bullets per time. 'R' is the 
Red-Power bonus. You will deal high damage shoting faster. 
If you are shoting 'strong' bullets with the pipe form you may be able to 
kill multiple monsters in a row. 'F' is the freeze bonus. 
It stops monsters movements and shots for some seconds. 'D' is the 
double-drop bonus. You will get a double amount of drops while killing 
monsters. 'HP' increases you HP if they are not already full, the same 
happens with the 'L' bonus for your LifePoints. If you lose all your 
HealthPoints you will lose a Life Point. HealthPoints will refull but you 
will lose you temporary bonus: Multi-Shot or RedPower. You can't keep at the
same time both Multi-Shot and RedPower. So it's better to try to get the
highest level in one of them. Every monster you kill will give you a certain 
amount of Points. They are added time by time to you total Score. When you 
complete a level, if you were fast enough, you might get some Time Bonus 
Points wich will also be added to you total Score. At the end of the game, 
if you score is high enough you will succeed in getting a position in the 
high score ranking.
