Royal Expeditionary Army play online

This is a puzzle strategy game, similar to variants of tower defense. Fight sites and monsters and fight through the devil.
Operation method:
Click on one of your own fortress drag the target to let the release of the fortress, you can attack the target fortress.
Own fortress will be based on time to upgrade themselves, the top fortress will open the bomb skills. Of course this is a player's privilege.
Monster's life should be strong and have the support of the monster king.
Just players, through the command of soldiers to defeat the monster's aggression bar.