Invite 5 of your friends to like the Castle Clash Page on Facebook and you will win 500 gems! It’s that easy!
Step 1: Visit http://woobox.com/ypn584
Step 2: Click “Authorize to see friends who are fans “
Step 3: invite your friend like fan page of Castle Clash
Step 4: fill IGN – IGG ID – Version and wait 24h to get 500 gem Free