Placing goodies in early levels for players to go back to later = good
Forcing player to go back to old levels to level up for the final part of the last level =bad
try this it does work !!! 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 till all countries are infected.If Madagascar closes its borders or is not infected in 30 days restart. 7)Buy all four drug resistances and 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.hypersensitivity and hemorrhaging. 10) Wait until everyone dies. Copy and paste this keep it alive.
On the map, screen click on the skills tab. You can improve the performance of your wizards and unlock units there by spending points. You get one point for every map beaten.
I just played a game and kept a close eye on madagascar...
In the 22 days it took for Madagascar to close it's port, only ONE ship came in from anywhere in the world. Yeah, no wonder it's so difficult to infect.
Great game though.