game save/level unlock using tables?

Hipster_Owl_Studios

is it possible or is there a video on how to do a level unlock or level save using tables? I curious to see if this is possible i feel like the game would run more effiecent using tables instead of a whole bunch of rules within all these different actors.

Dues

Here is one

UtopianGames

Heres the free file http://www.deepblueapps.com/levels-unlock-with-tables/

Darren.