| Name |
Pre-requisites |
Advances |
Results |
| Tech Level 11 |
| Steamships |
None |
5 |
Can build Steam Transport (st) units. Can build Shipyards. |
| Steam Cruiser |
Steamships, 1 Shipyard |
2 |
Can build Steam Cruiser (sw) units. |
| Tech Level 12 |
| Super-Heavy Artillery |
None |
4 |
Can build Super-Heavy Artillery (shg) units. |
| Heavy Steam Transport |
6 Shipyards |
5 |
Can build Heavy Steam Transport (sht) units. |
| Steam Dreadnaught |
Steam Cruiser, Super-Heavy Artillery, Heavy Steam Transport |
2 |
Can build Steam Dreadnaught (shw) units. |
| The Analytical Engine |
None |
4 |
Bonus to further R&D projects. |
| Tech Level 13 |
| Submersible |
None |
2 |
Can build Submersible (uw) units. Can build Subyards. |
| Internal Combustion Engine |
None |
6 |
Allows many subsequent projects. |
| Motorized Transport |
Internal Combustion Engine |
3 |
Can build Motorized Infantry (ti) and Motorized Artillery (tg) units. |
| Zeppelin |
Internal Combustion Engine |
2 |
Can build Zeppelin (z) units. Can build Zeppyards. |
| Parachute Infantry |
10 Zeppyards or 10 Airyards |
2 |
Can build Parachute Infantry (pi) units. |
| Heavy Zeppelin |
4 Zeppyards |
5 |
Can build Heavy Zeppelin (hz) and Transport Zeppelin (zt) units. |
| Steam Zeppelin-Transport |
Heavy Steam Transport, Zeppelin, 6 Shipyards |
3 |
Can build Steam Zeppelin-Transport (szt) units. |
| Tech Level 14 |
| Diesel Ship Engines |
Internal Combustion Engine, 5 Shipyards |
6 |
Allows the building of Diesel Engine Ships, Diesel Transport (dt),
Torpedo Boat (dew), Frigate (dw), and Destroyer (dhw) units. |
| Flying Machines |
Internal Combustion Engine |
5 |
Can build Cargo Bi-Plane (bt) units and Airyards. |