Command & Conquer 4: Tiberian Twilight is a real-time tactics video game and the latest installment of the popular Command & Conquer franchise. The gameplay in Command & Conquer 4 no longer follows the same resource-gathering dynamic as previous games in the series. In the main game mode, the player must capture control nodes scattered across a map, and retain more nodes than the enemy player, gaining enough points over time to win the match. Command & Conquer 4 utilizes class-based gameplay as well as some RPG elements.
There are two playable factions: the Global Defense Initiative (GDI) and the Brotherhood of Nod. The storyline begins with the world being consumed by the rampant growth of Tiberium, which is threatening to render the earth uninhabitable. Each faction is split into three upgradeable classes: offense, defense and support, each with their own specialized focus. The classes consist mostly of their own unique units, with the only shared unit among classes being the engineer. The offense class is focused on tank-based, front-line combat, relying less on any kind of fortified emplacements or bases. The defense class is focused on infantry-based combat as well as utilization of rudimentary base defenses, and are also the only class to have access to superweapons.