I have yet to buy level 3 exploration and level 3 science, I have finished all 16 puzzles, have 11 totems, and although I am missing a few of the collectables,i feel like i have completed the game....do I need level 3 exploration and science , if so for what?





ok I never did get any twins or triplets...
and with all the building work done, training a new builder seems pointless in order to make more elders

so all I can do now is , look for a few missing collectables and concentrate on the master builders to get them elders/masters in other fields!!

Essentially L3 Science anable you to get tech points quicker, and L3 Exploration enable you to spot collectibles more easily. Click in the ? button in the Tech screen. If you feel you've completed the game, start another.