It's basically the standard Inca house boom, but with the most efficient build. It focuses on age2 because, from experience, I think that it is better to just make more units rather than trying to age up to unlock stuff that is supposed to help countering opponent's age3 units (artillery, strong cav, etc.). In fact you can eventually get the kallanka units in age2 with the travois card (even tho they have age2 stats). But if you have solid mechanics in regards to micro and positioning those units are just a plus for when the game goes on and upgrades start kicking in.
Time references:
Age2 @ 4:15
First 10 units out @6:30
46-50 units @ 9:15
About 43v worth of eco @10:00
The deck
Age2 cards are pretty much forced as you may need every one of them at some point.
Age3 and age4 cards are just good to not put them in deck. You may change the kancha->wood card for something else as it rarely comes into play. The fortification card is good value but not strictly necessary.
Age1 card "American allies" is good because both Mapuche and Zapotecs have a tech which gives lot of crates of wood or coin.
The build order
Age1
Collect crates, make 2 houses and just get 800f to age up. Eat the starting lama at some point to have a food boost.
The first card is 3 villagers. Focus on treasures with your War chief. Can always use the Chasqui from the first shipment to scout the map.
Age at 14/20 with the option that researches for free all the wood upgrades at the market.
Transition to age2
Put all vills on wood and make houses every time you hit 180w. Try to make them as a wall to give vills shelter from any early harassament.
Send one or two vills to shoot hunts toward the TC but still task them to chop wood.
Kanchas alone produce enough food for the villager production, so don't bother to put even a single villager on food at any point till later. TC rally point is in fact on wood.
Age2
Send the 2 war hut card and keep making houses (now that age up bonus kicks in, it is like having 5.6 extra vills chopping wood).
Drop the 2 war huts in a practical position (usually behind houses) but don't train units yet.
From here I assume you can boom freely.
If you face early aggression then have to compromise the build by sending crates or units (try to send units only if absolutely necessary). You may even want to use the 2 travois age up if expecting a rush.
Inca are a booming passive civ so you need good defensive skills. This means dealing with aggression without actual units (using TC, vill micro, etc.).
Just keep in mind that this build gives great eco potential, so the more the opponent commits to the rush the more your winning condition is just to survive. If his rush fails you pretty much autowin from there.
The next card is 5 villagers. They also go to chop wood but not for long.
In fact once the clock is approaching 6:00 move all vills but 8 to food (time it with the 10th kancha house). Exactly when the clock hits 6:00 start queing jungle bowmen (I wouldn't bother making any pike even vs cav starts but you can make a batch of 5 to be 100% safe).
You should be able to make 8-10 units with the first two batches and after that always 10 units.
Send the chicha brewing card (kancha gathering rate boost worth roughly 4 vills) and when it arrives moves 2-3 vills from food to wood. Keep making bowmen.
Next card can be either 600w or 700c. Usually it's the latter as Chimu runners are needed at this point (if instead you're facing a musk/huss combo then you probably want some pikes so send 600w).
Use the 700c for 2 batches of 10 Chimus. If you want more chimus then move vills from wood to coin (but only after you made the last 2 houses and a market). Trade some food to coin if needed.
After sending 600w (which I assume it follows up 700c) you can usually send the 2 kallanka travois card. This gives acces to bolas (to better counter cav) and to huaracas (if the opponent drops an artillery foundry). If the opponent is in age2 I wouldn't bother with this card and I'd just send the unit upgrades which are you next cards anyway.
At this point you have great eco, access to all unit types and some upgrades on your ranged units. Always prioritize making units, but if you have enough resources and don't need units you may consider aging up instead.
In age3 the plan is about the same. Keep booming from multiple TCs and keep upgrading your units. You don't mind late game, actually you want it because Inca scaling out of this build is great.
