Of course, usually non-Unity games do use some kind of scripting language so they do have some 'code' in their DLC, but in Unity all your scripts get compiled into one giant native blob when you IL2CPP. A DLC, basically, is a folder that may or may not be available. If you never coded it for that, you'll need at least one patch that adds that capability. Some platforms don't even allow DLC that contains native executables.Įven then, your game needs to know how to enumerate and load the DLC.  In the industry it's common to use DLC only for assets, and add the code to support that DLC to the game via a patch. Also, you won't be to do this on any IL2CPP platform (everything besides PC and maybe Android). You need to dynamically load DLLs at runtime, which AFAIK is not simple. Code DLC, however, is not really supported out of the box in Unity. Asset DLCs can be done by using asset bundles.

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