Board Thread:News and Announcements/@comment-26243677-20150811095400/@comment-7326455-20150822083025

Actually, unless I've messed something up horribly in my calculations, feeding with diamonds is actually the most cost-effective method. You can exchange coins for diamonds in the market at a rate of 20,000 coins per diamond, but the comparative rates for feeding on Tribal Island are in the the area of 37,500 coins per diamond. Or in other words, a million coins' worth of diamonds from the market has a buying power on Tribal Island equivalent to 1,875,000 coins.

You just have to spend basically all day exchanging coins for diamonds...