Alien Syndrome

For cheats in this game, use the DOS utility DEBUG. 
First backup your game, then type the following from
the DOS prompt:
ren alien.exe cheater.cht
debug cheater.cht
For infinite lives, type:
e e1ae 90 90 90 90
To Stop The Timer, type:
e b8be 90 90 90 90
Then type:
w q
Then rename CHEATER.CHT back to its previous name.