The Ancient Portal is now open in iOS and Android!
Ancient World Strategy
Make sure to summon Guardangel first. That way you will be able to earn more Platinum to do other things with. After that there are a couple options:
1. Gorgoneia is a Magic element monster and so can go in the already opened Magic Habitat.
2. Upgrading Guardangel to level 2 is a cheap option to increase your Platinum production a little bit. Upgrading to level 3 will require opening up the Sapphire Mine, and again hardly increase Platinum production.
Go with Gorgoneia. That will increase the amount of Platinum you can store up in the Habitats and increase your earning rate more.
What strategies do you think are best for Ancient World? Let us know!