Opposing Force is the first expansion pack for Half-life. This time you play Adrian, a soldier Gordon Freeman meets in the original. With the new character, you get a new perspective to things and a variety of new weapons to play with.
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The game is a FPS, so, you have to shoot every enemy that you're meeting. But you have also to duck or to take cover. Players will lead Adrian through Black Mesa with new weapons and experience the pleasure to use alien weapons. Adrian will also have the opportunity to ask to guards, scientists or to abandoned teammates to follow him or to stay where they are, it can be vital for advancing in the game. You'll find three types of teammates: the soldier, the engineer (who will open closed doors) and the medic (who will heal you when you're asking him).
 Hardware Requirements
Minimum CPU Type: Pentium
Minimum CPU Speed: 133 MHz
Minimum RAM Required: 24 MB
Minimum Hard Disk Space: 200 MB
Graphics Type: SVGA
Graphics Resolution: Multiple Resolutions
Color Depth: 16