Board Thread:Dragon City Gameplay Questions & Answers/@comment-10718537-20140203142808/@comment-24013257-20140210080125

Just hatched my T-rex!

40 gems = 7 days on PC

40 gems = 6 days on Mobile

(For me, I only do the combats twice a day, because of the higschool - that is 6*7 = 42 combats. 42:7 = 6. 6*2 gems = 12 gems in combats/18 on Mobile; Stadium: 2*2*7=28 gems - that means 40 gems on PC and 46 on Mobile - though I did not calculated the combats I do in week-end lol)