3 ms·

Portal 2 runs a different branch of the source engine. Here is an (incomplete) list of the different branches. https://developer.valvesoftware.com/wiki/Categor

by pix64 13y ago

Portal 2 runs a different branch of the source engine. Here is an (incomplete) list of the different branches. https://developer.valvesoftware.com/wiki/Category:Engine_branches https://developer.valvesoftware.com/wiki/Category:Engine_bra...