| Cognizance | Zombie Shooter | Alien Shooter 2 | Alien Shooter | |
| 1.0 | 1.3 | 1.2 | 1.3 | |
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| Freeware | Shareware | Shareware | Shareware | Licence |
| FREE | $19.95 | $19.95 | $19.95 | Price |
| 4.76 MB | 27.15 MB | 142.90 MB | 6.91 MB | File size |
| Mar 27, 2006 | Dec 29, 2007 | Sep 8, 2006 | Sep 15, 2003 | Update |
| 17 | 19 | 36 | 24 | Downloads |
| Windows 2000, Windows XP, Windows 2003 | Windows 2000, Windows XP, Windows 2003, Windows Vista, Windows Vista x64, Windows Vista | Windows 2000, Windows XP, Windows 2003, Windows Vista, Windows Vista | Windows 2000, Windows XP, Windows 2003, Windows Vista, Windows Vista x64, Wi | OS |
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