（C）2004 Id Software, Inc. All rights reserved. Distributed by Activision Publishing, Inc. under license. DOOM and id are registered trademarks of Id Software, Inc. in the U.S. Patent and Trademark Office and in some other countries. Activision is a registered trademark of Activision, Inc. and its affiliates. The ratings icon is a registered trademark of the Interactive Digital Software Association. All other trademarks and trade names are the properties of their respective owners.

(c) 2001 id Software, Inc. All Rights Reserved. Return to Castle Wolfenstein, Wolfenstein 3D, Quake, Quake III Arena, the id Software name, and the id logo are either registered trademarks or trademarks of id Software, Inc. in the United States and/or other countries. Activision is a registered trademark of Activision, Inc. All other trademarks and trade names are properties of their respective owners.

（C）2011 id Software LLC, a ZeniMax Media company. ZeniMax, Bethesda Softworks, Bethesda and related logos are registered trademarks or trademarks of ZeniMax Media Inc. in the U.S. and/or other countries. RAGE, id, id Software, id Tech, and related logos are registered trademarks or trademarks of id Software LLC in the U.S. and/or other countries. All Rights Reserved. Windows, the Windows Start button, Xbox, Xbox 360, Xbox LIVE, and the Xbox logos are trademarks of the Microsoft group of companies, and "Games for Windows" and the Windows Start button logo are used under license from Microsoft. "PlayStation" and the "PS" Family logo are registered trademarks and "PS3" and the PlayStation Network logo are trademarks of Sony Computer Entertainment Inc. All Rights Reserved. All other trademarks are the property of their respective owners. All Rights Reserved.

（C）2004 Id Software, Inc. All rights reserved. Distributed by Aspyr Media, Inc. under license. DOOM and ID are registered trademarks of Id Software, Inc. in the U.S. Patent and Trademark Office and/or some other countries. The ratings icon is a registered trademark of the Entertainment Software Association. The Aspyr logo is a registered trademark of Aspyr Media, Inc. Mac and the Mac logo are trademarks of Apple Computer, Inc.,registered in the U.S. and other countries. All other trademarks and trade names are the properties of their respective owners.