Silicon Knights has been ordered to recall and destroy all unsold copies of any games created using the Unreal Engine 3, according to newly disclosed court documents from its legal battle with Epic Games.

The documents were posted by a NeoGAF user and state:

“Not later than December 10, 2012, Silicon Knights shall destroy all versions of the Licensed Technology in its possession, including (but not limited to) the video game code and game engine code for Too Human, The Box/Ritualys, The Sandman, X-Men: Destiny, and Siren in the Maelstrom, all versions of the Unreal Engine 3, and all copies of any information obtained from the licensee restricted portions of the Unreal Developer Network.”

In addition to this the developer has also been ordered to cease production of all these titles and recall any unsold copies at its own expense.

“Silicon Knights shall cease producing or distributing Too Human, The Box/Riualyst, The Sandman, X-Men: Destiny, and Siren in the Maelstron, and shall recall and destroy (at the expense of Silicon Knights) all unsold copies of Too Human, The Box/Ritualyst, The Sandman, X-Men: Destiny, and Siren in the Maelstrom.”

Back in May Silicon Knights lost its legal battle with Epic Games over using an unlicensed version of the Unreal Engine and was ordered to pay $4.5 million in damages.