Hi pauloparra,
This is not really related to your problem, I can not be a 100% certain that Alian Shooters caused this problem for me or not, but this is what happened to me. The game downlowded , installed, and played just fine, untill I shut the program down, the game screen disappeared, but the tag for the game on the task bar did not, meanwhile the Desktop was trying to refresh itself, but the icons were blinking randomly, very stange I thought. So I right clicked on the Tag for Alian Shooters and went to close it and right before my eyes, 3 icons moved to a new spot, one icon disappeared, and then to top it all off, the Control Panel icon renamed itself, changing the name to about 15 low case c, then it moved from the bottom of the Desktop to the top, all in a blink of an eye. Then the computer locked up.
After a reboot I checked each file I could find associated to Alian Shooter, nothing seemed amiss, there was no errors in the Event Logs, I then ran a few Malware checks, found nothing. I checked the forums and comment section, no one has reported a problem like this.
Anyway, after deleating the game, I have not had a problem since, "touch wood". I have never seen anything like this before, and I hope I never see anything like this again, to say the least I got the, "OH OH What Have I Done Now!" thing happening in my head, when the Desktop went out of control.
Have a good one,
Barry