Command & Conquer: Tiberium Alliances is a military science fiction massively multiplayer online real-time strategy video game. Command & Conquer Tiberium Alliances introduces an all new way to play in the C&C universe with a browser-based, free to play strategy MMO game. In Command & Conquer Tiberium Alliances, your skills as a Commander will be put to the test as you enter the fight for resources and world domination. Build up your base, optimize your resource production and discover new attack and defend tactics as you prepare PvP and PvE battles. Most importantly, you will need to build up strategic alliances to coordinate massive attacks and support each other for the fight over Tiberium.

GamePlay

The primary objective of this game is to control the center of the world. There is no story line in this game.
Each player will first select a sector on the World Map and start their first base there. The base will be protected from any attacks for exactly 1 week, but will go unprotected if the owner attacks another player prior to the time ending. From there the player can advance his base further through construction, gathering, or combat. There are several resources used in the game. They are Tiberium, Crystal, Power, Credit, and Research Points. Tiberium is used for Base Construction. Crystal is used to produce Infantry, Tanks and Aircraft. Electricity is used for both Base Construction and Military Enforcement. Credit is for transferring Tiberium and Crystals between bases. It is also used along with Research Points to research new units and structures for base advancement.
The player usually start off with battling against the Forgotten camps, then move on to battling Forgotten outposts and bases as well as other players’ bases, if their protection shields are down. Through battles the player can loot resources from other base, as well as lose resources. If a player loses his base, he can re-materialize his base on another nearby location. (source wikipedia)