Tactical defensive strategy Merge Bastion tasks you with defending an impregnable fortress from an endless onslaught of enemies. Recruit new recruits from the barracks, combine similar fighters to rank up, and place elite guards at key shooting positions along the trail. Take into account the change of biomes and dangerous modifiers of each new wave, because missed monsters cause irreversible damage to the precious citadel. Carefully place a garrison on the lines of defense and earn game points in Merge Bastion.