I've won an Immortal religious victory with Georgia recently. In essence, Georgia doesn't have any particular strengths that helps it surviving an early game and consolidate in the mid-game. However, you don't simply "go" to get a bonus. You "wait" for the bonus to come in play. Its UA, UB, and UU can be useful when situation is right. The UA and UB also have great synergy.
Glory of the World, Kingdom and Faith
- +100% Faith for the next 10 turns after declaring a Protectorate War
- Each Envoy sent to a city-state of Georgia's majority Religion counts as two Envoys.
I deliberately separates this UA into two parts. The reason is that the second part comes in play earlier. Essentially, double envoys for city-states following your religion will ensure you eventually getting their first, third, and sixth envoy bonus, and suzerain bonus, faster if done right. In order to maximize this UA, you might want to delay sending envoys to city-states until they follow your religion. On the other hand, this UA gives you higher chance to declare Protectorate War in the first place, after researching Diplomatic Service. Given that you most likely have more envoys than your opponents. It might also counteracts on AI getting envoys faster in higher difficulty. To maximize the synergy of extra envoys from religion, Religious Unity as founder belief is also recommended, which grants 1 envoy upon converting city-state and completing missions. The only downside of a Georgian religion game is that you'll have a rough time securing a religion. You best bet would be choosing the Divine Spark pantheon which increase your chance to grab a great prophet.
For the second part, I'll have to emphasize that "you are here just for the faith bonus". The second part is situational. You can't actively seek to use this casus belli since it relies on passive-aggressiveness. When someone, especially denounced rivals, attack your city-states, you should always use it. You don't have to care whether you could kill their units or capture their cities. You're just for the faith bonus. It works exceptionally well when the attacker is far away from you where their military would have hard time coming to you. You could just sit there and wait for the faith to come.
Strength in Unity
- When making Dedications at the beginning of a Golden Age or Heroic Age, receive the Normal Age bonus towards improving Era Score in addition to the other bonus.
I don't have much say on this UA since I have only experience a few times. However, it might be powerful in theory . In practice, this UA ensures you not falling into a dark age immediately after a golden age by giving you some extra score. You can also get higher score during heroic age by selecting 3 dedications to have 3 bonus and 3 ways to improve your score. Plus ultra.
Khevsur
- Production cost was decreased from 180 to 160
- 45 Combat Strength
- +7 Combat Strength and no Movement penalties in Hills.
I'm always welcome at unique units. For most part, it's because they replace a powerful unit that would otherwise require strategic resource, which sometimes is hard to find. With Khevsur, you're guaranteed a medieval swordsman-line unit with decent combat ability. Whenever your unique units online, you should strive for conquest. It's not saying you should conquer the world with this unit till the end of world. But rather, you should try to expand a bit by conquering 1-2 neighbours to expand your domestic economy. It is enough to ensure a victorious game. After that, just grow your city and ready for going to space.
What's Khevsur's strength? Well, it is a medieval units. That's it. And a little extra strength for its timeline. For one thing, Khevsur doesn't siphon resources when you're attempting to found a religion. You could always secure a religion, then switching to conquest, with a UU. You would want to start preparing encampments and barracks immediately after you have secured a religion. With great general and battering ram, you could ensure a successful conquest against your neighbour.
Tsikhe
- Lower Production cost (265 vs. 305).
- +3 Faith.
- +50 Outer Defense Strength.
- +3 Housing under the Monarchy Government.
- +3 Tourism (with Conservation)
This UB actually have great synergy with its UAs. When declaring Protectorate War against stronger enemies, when you cannot attack them, then defend against them. The extra 3 Faith also comes in handy. As Georgia, you have great incentive to build walls, both defensively and for faith generation. With reduced cost, Tsikhe is built with only 87% of time of Renaissance wall. With Lime, which gives +100% production. With these two modifier, Tsikha is built in only 43.5% of time. You could easily fortify even your underdeveloped cities. Before switching to Theocracy government, Monarchy government is a nice transition government that gives extra housing.
Edit: I love Georgia's theme.