Research is one of the Hearts of Iron 4 vanilla mechanics, for which the Old World Blues mod contains custom content.
Research is the priamry way of unlocking technologies, but some technologies can be obtained by completing a focus, or by a special event.
Research Slots[]
Technology is unlocked by assigning a research slot to it for the required number of days.
The base number of research slots depends on the country: Most generic nations and minor nations have 3 research slots with 2 more additional possible via national focus.
Research slots of Major Nations on Game Start[]
This table tracks the ammount of Research slots of various nations either at the start of the game, or the point of the Nation's creation.
| This article is a work in progress! Expect missing content, typos, and general mistakes! |
| Slots | Nations |
|---|---|
| 6 | Alamo Chapter |
| 4 | Caesar's Legion |
Research time[]
Each technology has a base time cost. They are multiples of the standard base cost of 85 days.
| Cost(Days) | Technology |
|---|---|
| 70 | Riot Control (1,2,3,4),Power Armour Equipment(1),Glider,Electronics(1) |
| 85 | |
| 91 | Aerodynamics tech (1,2,3,4,5,6,7), |
| 105 | Electronics(2) |
| 140 | Infantry Training(1,2,3,4,5,6,7,8), Energy Equipment(1,2,3,4,5,6,7), Balistic Equipment(1,2,3,4,5,6,7,8), Mele Weapons(1,2,3,4,5) |
| 240 | Equine Technologies(all of them) |
Research Speed Modifiers[]
Impact of game difficulty on research speed[]
Ahead of time Penalty[]
Ahead of time penalty works the same way, as in the vanilla HOI4. Hoi4 Wiki link.
Technologies[]
Technologies are split into 15 technology folders.
Land[]
- (unrecognized string "Infantry technology" for Template:Icon)Infantry technology
- (unrecognized string "Support technology" for Template:Icon)Support technology
- (unrecognized string "Vehicles technology" for Template:Icon)Vehicles technology
- (unrecognized string "Robotics technology" for Template:Icon)Robotics technology
- (unrecognized string "Land Doctrine technology" for Template:Icon)Land Doctrine technology
Air[]
- (unrecognized string "Air technology" for Template:Icon)Air technology
[]
- (unrecognized string "Naval technology" for Template:Icon)Naval technology
- (unrecognized string "Naval Modules technology" for Template:Icon)Naval Modules technology
Industry[]
- (unrecognized string "Industry technology" for Template:Icon)Industry technology
- (unrecognized string "Engineering technology" for Template:Icon)Engineering technology
Technology management[]
- (unrecognized string "Reward Technologies" for Template:Icon)Reward Technologies
- (unrecognized string "Tech Levels" for Template:Icon)Tech Levels
Nation specific[]
- (unrecognized string "Tribal technology" for Template:Icon)Tribal technology
- (unrecognized string "Cybernetics technology" for Template:Icon)Cybernetics technology
- (unrecognized string "Equine technologies" for Template:Icon)Equine technologies
Sources[]
- I am geting lost in sourcing the information,
- https://hoi4.paradoxwikis.com/Research