Cheat mode:

First double click on the left arrow, Then double click on the
right arrow, Then click the fire button, and then click 'Exit'.
A message will appear and a box and a new button with the word 
'Done' written on it. Type out one of the following code and 
press 'Done'.

Code       Effect
------------------------------
iamgod!  - Lots of ammo, and lots of points!
ammogod  - Lots of ammo
hilevel  - Go to last level
points   - Lots of points
slowman  - Alien moves really slowly
fastman  - Alien moves so quickly, you hit him every time!
yougirl  - Alien turns into a girl alien
bigboss  - Alien grows really big
minime   - If alien big, it gets to normal size again


Note:
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These cheats are for the MattBatt Alien Blast game.