This means that when you download (for example) a map, even though it may have (for example) HL2 Episode 2 textures/models, you are still able to see them properly without the game installed because you have downloaded them with the map. In addition to the previous answers, it is worth noting that some maps or mods have models/textures compiled with them. You will see a lot of checkered purple and black objects, and actual 'ERROR' messages like this: A complete list of Source games can be found here.īy not having the correct games, you could potentially be missing the textures needed to play maps created by others. I would say at the minimum, you will need that game (and you might as well get Team Fortress 2 since it's free). and many more! But the majority of the textures are handled with just Counter Strike: Source. It's important to note that some others games that may be needed are basically any game that run on the Source Engine developed by Valve. Team Fortress 2 has been free since June 23, 2011. This Reddit also provides some more details.Ĭounter Strike: Source is currently $19.99 at posting. Please note: Some multiplayer servers and game-modes might require you to own other games - such as Counter-Strike: Source and Team Fortress 2.

However, you will need to purchase and download (possibly) Counter Strike: Source and Team Fortress 2 for a lot of the textures and other game objects.

Technically - you do not need to purchase anymore games.

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