The Groovers is a Researcher that boosts all land industries.

Unlocking them automatically increases luck of all land industries.

They can be unlocked at rank 3.

The Groovers seem to reference The Griswold family from the National_Lampoon's_Vacation_(film_series)

The Groovers Boost Cost Cards Required
Level 1 5% Free 1
Level 2 7.25% 100 2
Level 3 10% 200 5
Level 4 13.25% 400 10
Level 5 17% 1,000 20
Level 6 21.25% 2,000 50
Level 7 26% 4,000 100
Level 8 31.25% 8,000 200
Level 9 37% 20,000 400
Level 10 43.25% 50,000 800
Level 11 50% 100,000 1,000
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