A tactical strategy with a fusion mechanic, Merge Wall Defense invites you to defend an impregnable fortress from hordes of monsters. Hire brave fighters, place them on a wooden battle tower and connect identical warriors with each other for instant evolution. Each successful combination increases the size of the defenders, increases the rate of fire and opens up destructive special moves at higher levels of leveling. Hold back the onslaught of giant ogres with dangerous bosses, save your castle and earn game points in Merge Wall Defense.