Command & Conquer: Tiberian Sun is a real-time strategy video game and the the sequel to the 1995 game Command & Conquer. It featured new semi-3D graphics, a more futuristic sci-fi setting, and new gameplay features such as vehicles capable of hovering or burrowing. The main story of the game focuses on a second war between the UN-backed Global Defense Initiative (GDI) and the cult-like Brotherhood of Nod, both seeking to rule over an Earth which is undergoing rapid ecological collapse.