The more gems you have better access to all those nifty gadgets, upgrades and secret agents you'll get. You can alwyas purchase gems in apps store. Prices are:
2,500 Gems ($0.99)
7,500 Gems ($1.99)
25,000 Gems ($4.99)
75,000 Gems ($9.99)
200,000 Gems ($19.99)
Eve and her comrades land on the surface to reclaim the extinct Earth and cross paths with a survivor named Adam. Eve is then led by Adam to the last surviving city, Xion, where she meets the elder of the town Orcal and is told many stories. In order to serve her mission to save Earth, Eve develops close relationships…