“SDI provides a+75% chance of intercepting ICBMs. SDI stands for "Strategic Defense Initiative...SDI (Civ4)
“The Manhattan Project enables ICBMs and Bomb Shelters for all players. The Manhattan Project was...Manhattan Project (Civ4)
“The Internet grants the builder all technologies that are already discovered by 2 known...The Internet (Civ4)
This category has the following 4 subcategories, out of 4 total.