Rank 4 is the rank following Rank 3. It unlocks 2 different researchers: Big Paulie, who automates and speeds up Clearcut, and Heck Axe, who increases the bonus resources when lucky in the Land industry. During this rank, the player can only complete 2 missions at a time. It is the first rank that isn't part of the tutorial. Rank 4 is the fourth and last rank which requires the player to complete every mission in order to rank up. In this case, the player will only be able to rank up to Rank 5 after completing all the 8 missions.

# Name Requirement Reward
1 Science Rules! Collect 50 Science Wood
2 Salt of the Earth! Own 1 M Farmers Wood
3 Chop Chop! Own 100 Clearcut Wood
4 Promote Researchers Upgrade 2 Cards Wood
5 Pave the Way Forward! Own 10 Roads Wood
6 Land in the Hand! Collect 5 B Land Wood
7 Plantation Association! Own 100 Plantations Wood
8 More Potatoes, More Glory! Collect 500 T Potatoes Wood

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