I would like to know how I can augment the slots of treasure chest? (:

is the easiest way :) They are in the Millionaire Center :D Other ways include zapping, loyalty totems, (not as good of a deal as the mkb), random events, etc.

Owh that's so expensive O_O The first box gives how many slots?

The MKB gives between 1-3 slots. I'm afraid it's random how many exactly.

Aw okay. Thanks :)