Metal Slug Defense is an online mobile game, 2D action-shooting, tower defense and strategy game - command your troops in order to seize the throne of the world’s best “METAL SLUG” player, is free to play on Android and iOS devices, from SNK PLAYMORE.
Download the game at:
https://play.google.com/store/apps/details?id=com.snkplaymore.android003
https://itunes.apple.com/app/id857449903?mt=8