Wonder[]
Unlocks the Kremlin World Wonder.
Tier 1[]
Academy of Sciences[]
Each City increases 
Science costs of Technologies by 4% (instead of 5%).
Utopianism[]
+6 
Tourism in each City.
Universal Healthcare[]
+1 
Happiness from each National Wonder and Guild.
Double Agents[]
+2 
Spies and Spies are twice as likely to kill enemy Spies when stationed in your Cities.
Collectivization[]
+1 
Food from Farms and Terrace Farms..
Iron Curtain[]
+4 
Production from Internal 
Trade Routes.
Five Year Plan[]
+1 Production from each Mine and Quarry. +4 Production from each Manufactory.
Red Army[]
+12% 
Combat Strength for Gunpowder Units adjacent to another Gunpowder Unit.
Tier 2[]
[Prereq: 2x Tier 1]
Workers' Faculties[]
+2 Science from Workshops, Windmills, Factories, Solar Plants, Nuclear Plants, and Spaceship Factories.
Socialist Realism[]
+50% Tourism to Civilizations with less Happiness.
Communism[]
Reduces 
Unhappiness from Ideology pressure by 75%.
Patriotic War[]
+33% Production towards Gunpowder units.
Party Leadership[]
+3 Happiness per City.
Tier 3[]
[Prereq: 2x Tier 2]
Spaceflight Pioneers[]
May finish 
Spaceship parts with 
Great Engineers. A Great Engineer and a 
Great Scientist appear outside the Capital.
Cultural Revolution[]
The Empire gains bonus % for 
Great Musician points equal to its Production output.
Satellite States[]
+4% Food and Production in all Cities for each Courthouse in the Empire.
Ministry of Railways[]
+25% increased Production boost from Railroads and +3 Happiness for each City connected to the 
Capital by Railroads.