“Advances in rocket science during the Cold War led to the invention of satellites and ICBMs, missiles capable of hitting targets on the other side of the world.”
|Chapter||Requirements||Cost Gold||Time||XP Gain||Description|
|1||Library level 12+ Sentries||2,300,000||18h||1,575||+10% Missile Silo health|
|2||4,600,000||5d||4,465||+5% Missile Silo attack|
|3||6,900,000||8d||5,780||Reduces the threat required for missile launches by 5%|
|4||9,200,000||10d||6,535||+5% Missile Silo attack|
|5||11,500,000||14d||7,835||Reduces missile launch time by 1 second|
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