Europa Universalis IV - Third Rome (DLC)

Third Rome is a flavor DLC for Europa Universalis IV that zeroes in on the Tsardom of Russia and the broader Orthodox Christian sphere. If you have ever found vanilla Russia to feel like a generic blob-and-expand experience with a cold weather penalty slapped on top, this expansion is the corrective. It introduces the Tsardom government type with its own mechanics, the Patriarchal Authority system that lets you interact with the Orthodox faith in meaningful ways, and a dedicated mission tree for Muscovy and its successors that actually gives your early game a sense of narrative purpose. The streltsy unit type also arrives here, giving Russian armies a distinct early-to-mid-game identity before the westernization grind kicks in. The Patriarchal Authority bar is the mechanical centrepiece. You build it by founding monasteries, completing religious missions, and making the right calls in Orthodox events, then spend it on powerful boons like converting provinces faster or boosting your church power generation. It is a resource management loop that rewards planning two decades ahead, which is exactly the kind of sub-system EU4 does well when it trusts players to care about the flavour. Paired with the expanded mission tree, Muscovy stops feeling like a blank canvas and starts feeling like a faction with actual historical weight. That said, Third Rome is firmly a regional pack. If you do not intend to play Russia, Novgorod, or an Orthodox state in eastern Europe in the near future, the purchase is hard to justify on its own. The new content does not bleed into other parts of the map in any meaningful way. The AI improvements introduced alongside the DLC benefit everyone, but the headline features are geo-locked. Veterans who rotate through every major power will get obvious value; players who prefer the Iberian peninsula or the HRE will barely notice it is installed. For newer EU4 players specifically, Third Rome is actually a reasonable entry-point DLC for a first Russian run. Muscovy's mission tree provides a clear early roadmap, which substitutes nicely for the kind of strategic direction that beginners often lack. The tutorial in EU4 itself remains famously inadequate for the full complexity of the base game, but a guided mission tree fills some of that gap for this particular starting position. Just make sure you understand coring costs and overextension before you start chasing the Siberian trade nodes, because Third Rome gives you the ambition and the mechanics to over-expand spectacularly if your administrative capacity math is off. The mod ecosystem around Third Rome is healthy. Several overhaul mods that focus on eastern Europe integrate its mechanics and expand on them, and the Patriarchal Authority system has inspired community submods that apply similar religious resource loops to other faiths. If you are already deep into modded EU4, Third Rome is close to a prerequisite for anything touching Orthodox content. Bottom line: it is a well-constructed, focused expansion for one of EU4's most historically compelling regions. The depth is genuine, the mission trees add replay value across multiple Russian starts, and the Patriarchal Authority loop is one of the better faith-management systems in the base game's DLC catalogue. Just do not buy it expecting content that travels beyond the Orthodox world. Diego, Scout Team