Written by Jeremy Haynes: "What started off as a popular mod for Half-life is now getting the retail version it deserves. The mod was first released in 2002 where it grew its popularity because it took the shooting elements in Half-life and added real-time strategy (RTS) elements, making it something entirely different. The game is simple; there are two sides, the aliens (Kharaa) and marines (Frontiersmen). Each side is fitted with a commander who takes on the RTS part of the game, while the other players take the role of the first person shooter (FPS). You have to collect resources and use them to build things and get upgrades. The aliens are similar, but they have the option to evolve into more powerful aliens with the options for special abilities."