Unless you are the way ahead tech leader, the Internet wonder is the wonder that keeps on giving.
And sometimes it's actually very useful to have (especially in multiplayer) even if you're well ahead of the other civs technologically - just for denial purposes. Sure you won't get any techs from the wonder yourself (or maybe just a few really old ones)... but denying your competitors the ability to get a large number of powerful techs for free is definitely a good thing.
Where can I find more about Permanent Alliances?
Hmm, I did a quick search but couldn't find a good article detailing all the mechanics of permanent alliances. It's probably something that should be detailed in the War Academy, but it doesn't seem to be there.
The basics of how a permanent alliance works once you sign it:
- You can never declare war on your ally for the rest of the game after signing, and vice versa.
- You share line of sight with your ally; in other words, you see everything they see and vice versa.
- You and your ally can view (but not change) each others' city screens, as if you had free Spies constantly inside them.
- Most wonders will provide benefits to both of your civs where applicable; for instance, Stonehenge will give you both free Monuments (if it isn't obsolete), the Pyramids will give you both access to the government civics, and the Mausoleum of Mausollus will give you both longer Golden Ages. The few exceptions include the Taj Mahal (only one Golden Age between you) and the Oracle (only one free tech between you).
- You will instantly share all technological knowledge; in some cases this can involve a very backwards civ suddenly becoming very advanced. There are a few exploits surrounding this, as I recall (haven't tested it in a while).
- Techs now cost 50% more, but you combine your research with your ally. Generally this will mean that overall you discover new technologies faster than you did before, unless your ally is severely underdeveloped or much smaller than you. The exception is usually in multiplayer - if you were constantly trading techs between yourselves before signing the PA, your overall tech rate will decrease slightly after entering a PA with that person.
- You and your ally can use each others' roads and rails, just as if you had permanent Open Borders.
- Your workers can now improve your ally's land as they can your own. (And vice versa - although I think AI allies won't interfere with your improvements.)
- Cultural borders between you and your ally will become "friendly". For instance, if you have a city with a massive amount of culture which was previously engulfing your ally's city, then as soon as the permanent alliance is signed, your borders will recede in that area to allow your ally's city to gain access to as many workable tiles as possible (the rest remains in your culture). In cases where the workable radii of cities intersect, the game tries to redistribute tiles evenly. (Actually it follows a predictable algorithm, which I won't go into here.)
- In the case of AI allies, you can tell them what to research (immediate effect), demand or offer any resource (immediate effect) or suggest where to attack (not immediate, also not guaranteed). With human allies you will of course discuss this between yourselves anyway.
There are several other minor effects too, including the fact that your troops treat your ally's territory as "homeland" (so you don't suffer unit supply costs while there), you can use your ally's nearby medics, and your units heal in your ally's territory at the same rate they would in your own homeland. But I think I've covered the main points. If anyone notices something I've missed, feel free to speak up.
