After finishing the game, you will be given a menu with 2 options - CONTINUE and NEW GAME. Press Up or Down to find the PROFESSIONAL level; it has all the action sequences with NO simulation sequences.
There are at least 3 extra 1-Ups to be had while directing the building of towns. If you cause it to rain over the lake east of Bloodpool, the people will find and present you with the first one. In Kasandora, once you have uncovered the pyramid cause an earthquake and another source of life will be uncovered. The third one is collected by striking the Northwood temple with lightning.