napakatagal maglevel up...kailangang level 12 with 12 stars ang iyong bato bago maiparent o maipagbili..pagkatapos ay kailangang may 10000 crypton ka bago makapagpagppalit ng gubi..ay kada araw ay isa hanggng dalawang crypton lang ang makukuha mo.imagine, if we need 10000 crypton before the exchange, you need to play this game in 5000- 10000 days equivalent to 13-27 years.unless you spent money to buy crypton...in their ad, this is a free game and you just need to play this in 10-15 days....