1)Pick Virus. 2)Start in Canada, New Zealand, Cuba, or Greenland.If you do not get there restart. 3)Sell starting symptoms, if any, and buy sneezing. 4)Buy 1-1-1-0 resistances. 5) Once three countries are infected, sell sneezing to get rid of visibility. 6)Wait until all countries are infected. If Madagascar closes its borders or is not infected in 30 days, restart. 7)Buy all four drug resistances, sneezing, coughing, and vomiting. 8)After a few days, unlock tiers 2-3, keeping whatever symptoms it gives you. 9)Buy fever, fatigue, diarrhea, pulmonary edema, and hypersensitivity. 10) Wait until everyone dies. Copy and paste this- keep it alive.
ROFL i only just one level 12
and level 10 (warning Spoiler)
you must put the blocks on the big one until you get the triangle put that ontop then youll get the Long bar put that below the blocks in the Gap and then put the other blocks on the bar until the traingle and then there you go
Dude! You just completed the Think Outside the achievement in Duck, think outside the flock and won the Think Outside the badge and 15 points!
LEVEL 24walkthrough when your on it do not click the corners but click the ducks on the sides
 "Pandemic 2"){kind=icon}
 "Super Stacker"){kind=icon}
 "Duck, think outside the flock"){kind=icon}