Total Entertainment Network (TEN) was an online gaming service that existed from September, 1996 until October, 1999. T E Network, Inc., which created and operated the TEN service, was formed from the merger of Optigon Interactive and Outland in June, 1995 when they received their first round of venture capital funding from Vinod Khosla, a general partner at Kleiner Perkins Caufield & Byers.
The service offered PC game players a place to play DOS and Windows-based games online with and against other players, to chat, to download game-related content, and to compete for high scores and to win tournaments. The service was bundled with many PC games and offered as a subscription service. Some of the games supported on TEN include Duke Nukem 3D, NASCAR Racing Online Series, Magic: The Gathering Online, ARC, AD&D's Dark Sun Online, Quake, Quake 2, Shadow Warrior, Wulfram, Warheads, Master of Orion II, Blood, WizWar, Command & Conquer: Red Alert, Command & Conquer, Panzer General, Twilight Lands, Diablo, Warcraft, Deadlock: Planetary Conquest, Big Red Racing, Myth, and Total Annihilation.
Source: Wikipedia, "Total Entertainment Network," available under the CC-BY-SA License.