Rank 81 is the rank following 
Rank 80. No new researchers unlock at this rank. You must complete at least 18 out of the 21 missions available to move on to 
Rank 82
| # | Name | Requirement | Reward |
|---|---|---|---|
| 1 | A Healthy People! |  Collect 5.7 AAA Placebos
|
 Wood
|
| 2 | Science Rules! |  Collect 12,000 Science
|
 Stone
|
| 3 | Artillery Deployed! |  Own 945 M Artilleries
|
Wood
|
| 4 | Hankering for Tankering! |  Own 4.3 B Tankers
|
Wood
|
| 5 | More Potatoes, More Glory! |  Collect 69 NNN Potatoes
|
Wood
|
| 6 | Perfect for Nuclear Wessels! |  Own 20 B Nuclear Plants
|
Stone
|
| 7 | Armed and Glorious! |  Collect 8.4 GGG Bullets
|
Wood
|
| 8 | Hospitable Host-Pital! |  Own 9.5 B Hospitals
|
Stone
|
| 9 | Promote Researchers |  Upgrade 2 Cards
|
Stone
|
| 10 | Land in the Hand! |  Collect 2.7 PPP Land
|
Wood
|
| 11 | A Must for Dusting! |  Own 180 B Crop Dusters
|
Stone
|
| 12 | Stronger than Dirt! |  Collect 274 KFC Ore
|
Wood
|
| 13 | Coast Busters! |  Own 10 B Coast Guards
|
Stone
|
| 14 | Fortress to Impress! |  Own 64,897 Fortresses
|
Stone
|
| 15 | Red Eye Flight! |  Own 38 B Airports
|
Stone
|
| 16 | Stronger than Dirt! | Collect 29 MMM Ore
|
Wood
|
| 17 | Dome Rhymes With Home! |  Own 528 Biodomes
|
Stone
|
| 18 | A Healthy People! | Collect 911 GGG Placebos
|
Wood
|
| 19 | Red Eye Flight! | Own 66 B Airports
|
Stone
|
| 20 | Fortress to Impress! | Own 75 M Fortresses
|
Stone
|
| 21 | Stronger than Dirt! | Collect 3.3 NNN Ore
|
Wood
|
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