After the redesigning of the unit stats for my mod, I started today to work on the tech tree.
For the first era, I have 8 subperiods:
- Early bronze age
- Late bronze age
- Early Iron age
- Late Iron age
- Barbarian invasions
- Early medieval
- High medieval
- Late medieval.
Strangely, it's close to what Sandris is doing in his packs
To implement these periods, I have "chock point" tech, such as "Late bronze age", and you need to research most of the techs from the early bronze age before you can reserach it, and late bronze age is a prerequesite to all the techs of the corresponding period.
This way, you HAVE to discover some techs before you can move forward. It may be a bit to deterministic, but it helps with the flaw of the game and balance.
At first, I contemplated using civ specific tech tree, to have named period. Like for China "Zhou dinasty", "Han dinasty"... But I can't find a good way to make it work.
If I use "Han dinasty" as chock point, then all the following techs would require it, and it won't work....
So I decided to keep a Eurocentric naming of the period. Not perfect, but I don't see how to make it work. I take ideas!
Now, I need to find a way to have nice upgrade paths for all of Sandris units...
I could try to find a nice tech for each of them, but first it would too require many techs. If we count swordsman + spearman + archer + horseman + horse archer, and then later crossbow, knights, for 8 periods, that's roughly 40 techs just for new units :

Beside, I would find it strange that for China for instance, the spearman is Han dynasty, and the Swordsman remains Shang!
So, my idea is to have the "subperiods" tech upgrade ALL the units at once.
Some military techs would still be useful to find NEW units.
Example with Germany :
- In the first period, they start with
The Tribal wars tech unlock the spearman line, and they can make this
The Warrior cast tech gives this
And ther Bow tech givs this
Then, when they have discovered enough techs (including non military such as Bronze working), they can research the Late Bronze Age period tech.
When they get it, they immediately get updates to all their units, with
During this period, they can research Horseback riding and Range warfare to unlock new types of unit.
At the end of the era, they will be able to discover Early Iron Age. And all their old bronze age units are immediately upgradable to new units.
Some techs later, they'll reach the Late iron age.
Again some techs, and they'll get to the Dark Ages...
For the first era, I have 8 subperiods:
- Early bronze age
- Late bronze age
- Early Iron age
- Late Iron age
- Barbarian invasions
- Early medieval
- High medieval
- Late medieval.
Strangely, it's close to what Sandris is doing in his packs

To implement these periods, I have "chock point" tech, such as "Late bronze age", and you need to research most of the techs from the early bronze age before you can reserach it, and late bronze age is a prerequesite to all the techs of the corresponding period.
This way, you HAVE to discover some techs before you can move forward. It may be a bit to deterministic, but it helps with the flaw of the game and balance.
At first, I contemplated using civ specific tech tree, to have named period. Like for China "Zhou dinasty", "Han dinasty"... But I can't find a good way to make it work.
If I use "Han dinasty" as chock point, then all the following techs would require it, and it won't work....
So I decided to keep a Eurocentric naming of the period. Not perfect, but I don't see how to make it work. I take ideas!
Now, I need to find a way to have nice upgrade paths for all of Sandris units...
I could try to find a nice tech for each of them, but first it would too require many techs. If we count swordsman + spearman + archer + horseman + horse archer, and then later crossbow, knights, for 8 periods, that's roughly 40 techs just for new units :

Beside, I would find it strange that for China for instance, the spearman is Han dynasty, and the Swordsman remains Shang!
So, my idea is to have the "subperiods" tech upgrade ALL the units at once.
Some military techs would still be useful to find NEW units.
Example with Germany :
- In the first period, they start with
The Tribal wars tech unlock the spearman line, and they can make this
The Warrior cast tech gives this
And ther Bow tech givs this
Then, when they have discovered enough techs (including non military such as Bronze working), they can research the Late Bronze Age period tech.
When they get it, they immediately get updates to all their units, with
During this period, they can research Horseback riding and Range warfare to unlock new types of unit.
At the end of the era, they will be able to discover Early Iron Age. And all their old bronze age units are immediately upgradable to new units.
Some techs later, they'll reach the Late iron age.
Again some techs, and they'll get to the Dark Ages...


and that is the kiss of death - trust me
please try and pay attention