There really is no algorithm for this, instead it's a simple member count prerequisite approach.
Here are the member numbers for each tribe level:
Level 1 - 0+ members
Level 2 - 9+ members
Level 3 - 40+ members
Level 4 - 100+ members
Level 5 - 300+ members
Level 6 - 1,000+ members
Level 7 - 3,000+ members
Level 8 - 10,000+ members
Level 9 - 30,000+ members
Level 10 - 100,000+ members
Level 11 - 300,000+ members
Level 12 - 1,000,000+ members (currently maximum level)
Out of pure curiosity, can you tell me what is the algorithm for the tribe's level depending on its members count?
There really is no algorithm for this, instead it's a simple member count prerequisite approach.
Here are the member numbers for each tribe level:
Level 1 - 0+ members
Level 2 - 9+ members
Level 3 - 40+ members
Level 4 - 100+ members
Level 5 - 300+ members
Level 6 - 1,000+ members
Level 7 - 3,000+ members
Level 8 - 10,000+ members
Level 9 - 30,000+ members
Level 10 - 100,000+ members
Level 11 - 300,000+ members
Level 12 - 1,000,000+ members (currently maximum level)