AAAAAAAAAAAAAAAAAAAAAA==: Tier 1. - Beginners Age
AAAAAAAAAAAAAAAAAAAAAQ==: Tier 2. - Steam Age
AAAAAAAAAAAAAAAAAAAAAg==: Tier 3. - Steel Age
AAAAAAAAAAAAAAAAAAAAAw==: Tier 4. - Chemistry Age
BeYoHyOiRGiIlu4h2OeYXw==: Tier 5. - Fusion Age
