Source SDK Base
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Source SDK Base is a game/tool shared between all owners of Valve Source games, on which modders can base their projects. Both singleplayer and multiplayer mods can use it.
The games that provide access to SDK Base are listed here. The free copies of them available through hardware promotions do not provide access.
Versions
There are currently two versions of SDK Base: the Episode One version (AppID 215) and the superior Orange Box version (AppID 218).
The OB build is separate because it is not backwards-compatible with the Ep1 build. Unless you have a good reason for sticking with the Ep1 engine, you should use it.
Content (Orange Box)
- Source SDK Base - Orange Box (
sourcetest) - Source SDK Base (
sourcetest) - Half-Life 2: Lost Coast (
lostcoast) - Source 2007 shared (
hl2) - Source shared (
hl2)
Content (Episode One)
- Source SDK Base (
sourcetest) - Half-Life 2: Lost Coast (
lostcoast) - Source shared (
hl2)
FAQ
- Where can I find Source SDK Base?
- In Steam's Tools tab. You will be prompted to install it when first running a mod, or you can install it yourself. There is no need to run it directly.
- Do I have to base my mod on Source SDK Base?
- No, you can base on any game. But bear in mind that:
- You are restricting the size of your audience if you require a specific purchase.
- Multiplayer games may break your mod by updating to an incompatible branch of the engine. This has already happened with DOD Source.
- How can I use additional Steam content?
- See Gameinfo.txt#Mounting content.