Portal 1 and Portal 2... Problem in time is a mod for portal. And of course, there is a big problem in time!
this is Portal 2 Editor sure?
This is the Source SDK not authoring tools. If you don't believe it, that's fine with me. Me and my mapper will be the only ones mapping until Valve comes with an update. PLUS when does P2 have that type of liquid?
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Mine works! I'll post a tutorial on how in a couple days or so.