When XCOM 2 was released, almost all mods for XCOM 2 were posted on both Nexus and Steam, but as time went on more and more of the mods were posted only on Steam. Mods were also hosted on Steam, but my recollection was that it was less so than on the Nexus. Recall that Nexus was the hosting source for the Long War mod (and many others) for XCOM 1, so there was a well-established history for XCOM mods on the Nexus. I base this on modding for XCom 2, as now almost all the mods are, or were, being posted only to Steam rather than to the Nexus. I'm very worried for the Nexus, and I fear that eventually many (most) of the most popular mods will end up hosted solely on. The Nexus has a much better established history for Bethesda mods, but.