Electronic Arts' seminal strategy franchise Command & Conquer is coming to your web browser as a massively multiplayer online game, and best of all, it's free to play. Command & Conquer Tiberium Alliances will be released as a closed beta today, with invitations issued by email to some of those who sign up. Tiberium Alliances is the latest of EA's big names to be seen under the Play4Free branding, following earlier releases under the Need for Speed and Battlefield brands. It's been a good month for browser-based gaming, with big names Square Enix and Super Giant Games both releasing titles for Chrome's Native Client recently. There's no word on the technology behind the game yet, but EA says that unlike other Play4Free games, Tiberium Alliances will work across a range of web browsers and mobile devices. The trailer, while containing some in-game footage, isn't much more helpful.