Half-Life 2: Episode One is a sci-fi first person shooter game for Mac.
Download from the developer's website

Alternative apps

Second Life
Second Life
FREE
rating

Premium membership includes a virtual home, weekly rewards, and a sign-up bonus!

Life Balance
Life Balance
rating

There to help if y find that your life's getting really busy.

My Farm Life
My Farm Life
rating

An enjoyable and attractive time-management game.

Box Life
Box Life
FREE
rating

Puzzle platformer type of video game.

Second Life Friends Online
Second Life Friends Online
FREE
rating

Shows the currently connected friends in Second Life game.