Talk:Castle/@comment-96.233.44.11-20121105072911

Based on the curve provided here, I think earth island will total between 52m and 57m to upgrade. Here's the math curve--they remain pretty constant in the difference between their upgrades, steady enough to plot a line:

Plant island 48,500

Cold island 900,000 (x 18.55 gets 8m). .478

Air island 8,000,000 (x 8.88 gets 31.75m) (x.446=3.96)

Water island 31,750,000 (8mx 3.96) (X.446 =1.76 projection for earth)

31,750,000 x 1.76 = 55,880,000 estimate for earth island OR more likely it will be: (low estimate) 52,000,000 if instead of .446 you enter .414, taking away .032, (same difference between cold and air).

Then again, they don't ave to follow any rules... But if they go much higher it will be really tough for most people.

Diamonds to speed up estimate for earth: 140