PKO players can keep digging till they dig up the PKO contest from MMOsite and stand a chance to win the following:

Pirates King Online: 30 winners 
First Place prizes (x5)
Lv1 Gem of Rage (x 5)
Lv1 Gem of Wind (x 5)
Lv1 Gem of Striking (x 5)
Lv1 Gem of Colossus (x 5)
Lv1 Gem of Soul (x 5).

Second Place prizes (x10)
Lv1 Gem of Rage (x3)
Lv1 Gem of Wind (x 3)
Lv1 Gem of Striking (x 3)
Lv1 Gem of Colossus (x 3)
Lv1 Gem of Soul (x 3).

Third Place prizes (x15)
Lv1 Gem of Rage (x 1)
Lv1 Gem of Wind (x 1)
Lv1 Gem of Striking (x 1)
Lv1 Gem of Colossus (x 1)
Lv1 Gem of Soul (x 1)

So start digging!