Defense Grid Gold is a special compilation of the highly acclaimed tower defense game, Defense Grid: The Awakening, and extra packs Borderlands and Resurgence. In all, Defense Grid Gold includes 32 environments and over 130 challenge modes. It offers a unique spin on tower defense gameplay that will appeal to players of all skill levels. A horde of enemies is invading, and you must stop them by strategically building fortification towers around their base. Beautiful environments, spectacular effects, and a dynamic, engaging soundtrack bring the world to life. The controls are intuitive and the gameplay is deep; special attacks and the properties of each tower work together to provide endless options for defense!