10000 BC

The year 10,000 BC (X) predates the launch of the Transformers brand by eleven thousand nine hundred and eighty four years.

For further information, see: Transformers timeline

Fiction

Live-action Movie Continuity

• An archaeological dig by the Science Division discovers the remains of the Dynasty's sarcophagi and The Fallen's intact sarcophagus. Cybertron comes under attack by an alien race. Coming under The Fallen's influence, Megatron uses his control of the Defense Force to establish a military dictatorship, while Optimus discovers that he is the lost Prime. Optimus's group goes underground, while Megatron forms the modern Decepticons. Most of his army leaves Cybertron in the Nemesis, and Optimus Prime's Autobots begin their rebellion, but neither side possesses a concrete advantage. Defiance The civil war culminates in the Battle of Tyger Pax: while the main Autobot forces hold the Decepticons back at Simfur, a smaller team under Bumblebee buys those in Tyger Pax the time they need to launch the AllSpark into a wormhole in space. Megatron leaves Cybertron to follow it. Prime Directives Bumblebee loses the ability to speak.

Non-Fiction

North America

• Smilodon (saber toothed tiger), Woolly Mammoth and American Cheetah all become extinct.