I.G.I. 2: Covert Strike download

You fight as a covert ops soldier in the battlefield
Counter
Download from the developer's website

Alternative software

Galaxy Strike
Galaxy Strike
Free
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Action game that you can find in the site of GameTop.com

DemonStar Secret Missions
DemonStar Secret Missions
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Secret Missions is a mission pack for DemonStar, a vertical scrolling shooter.

Counter-Strike Source 2D
Counter-Strike Source 2D
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This software is a mod for Counter-Strike 2D that makes a bloom effect.

Alien Strike
Alien Strike
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A third-person shooter game with the goal of stopping an alien invasion.

DemonStar Secret Missions 2
DemonStar Secret Missions 2
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Vertical scrolling space shooter.