
The wear quality is represented by a float value in game data. The rarity of the exterior quality is based on a bell curve for most weapons, with extreme Factory New and extreme Battle-Scarred being the rarest. The exterior quality simulates randomized wear and tear on the skin. Counter-Strike on the Xbox sold an additional 1.5 million units.A random exterior quality is chosen when a weapon skin is dropped, uncrated or received from a Trade Up Contract. It's important to note that sales of Counter-Strike (2000) and Counter-Strike: Source (2006) represent retail sales of the stand alone game only, it doesn't account for any sales through digital distribution or the consumers who received the mod for free with the original Half-Life, Half-Life 2, The Orange Box or any other package.Ĭombined, the figures published by Valve total 32.8 million units sold, which is increased to 36.5 million if Left 4 Dead projections are included. Half-Life 2: Episode One (2006) - 1.4 Million.

