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Titre : All Our Yesterdays: The Time Travel Sourcebook
Genre : Jeu de rôle
Auteur(s) : Steve Kenson, James Kiley, S. John Ross, Steven S. Long, Kenneth Hite
Illustrateur : Joe Corroney, Anthony Hightower, Steve Kurth, Terry Pallot
Équipage : TOS,TNG, DS9, (VOY)
Série : "Roleplaying Game" #15002
Éditions : Last Unicorn Games
Publication : 2000
Pages : 126
ASIN/ISBN : ISBN 1889533238
Date terrienne : Il y a 15 Milliards d'années à 12.250

"All Our Yesterdays: The Time Travel Sourcebook" est un ouvrage de jeu de rôle de la gamme "Roleplaying Game" de Last Unicorn Games.


4ème de couverture 
Back to the future...
... ahead to the past...
... sideways to today!
From the ancient humanoids of four billion B.C. to the Kelvan Invasion of the 123rd century, all time stands open before you. All Our Yesterdays is the complete guide to time travel in the world of Star Trek roleplaying, covering everything from time travel techniques such as the slingshot effect and Borg temporal vortices to the rifts in space-time which snare unwary travelers. Overlays and organizational details make members of the Department of Temporal Investigations and other transtemporal characters ready to play. There's a chronology of the Star Trek universe, guides for Narrating time travel episodes and avoiding (or inviting) temporal paradox, 29th century Federation Timeships and fearsome Borg spheres, and teasers for episodes stretched all across the galaxy and throughout its history.
Cross your 23rd century Star Trek Roleplaying Game characters over into your Next Generation or Deep Space Nine series (or vice versa), or run a pure time travel series. The first of our Expanded Universe sourcebooks combines the entire cosmos of Star Trek roleplaying opportunities. This book includes:
  • Eight episode seeds, three series seeds for Expanded Universe play, and nine parallel histories accessible by subspace rift or Romulan treachery.
  • Directives (including the Temporal Prime Directive), guidelines, mission types, technology, history, and organization for the Department of Temporal Investigations -- enough information to run an entire DTI series.
  • Four new overlays and eight new DTI Tours of Duty, plus early life background history packages, new advantages and disadvantages, new and expanded life skills (including psionic skills) for time travel, and more.
  • Seven new ships and five new alien species descriptions (including the Krenim, the Travelers, and an expanded Devidian description).
When time flies, you're having fun! Get started now with All Our Yesterdays: The Time Travel Sourcebook!


  • Introduction
  • Temporal Physics
  • Parallels
  • A History of Time Travel
  • The Department of Temporal Investigations
  • DTI Characters
  • Others in Time
  • Timeships
  • Narrating Time Travel


Ce premier (et unique) supplément de la gamme "The Expanded Universe" traite du voyage dans le temps et est compatible avec les autres gammes du système Icon (TOS, TNG et DS9).

Cet ouvrage fut l'un des deux derniers ouvrages de jeu de rôle Star Trek publiés par Last Unicorn Games, la compagnie étant en cours d'acquisition par Wizards of the Coast à cette période et Paramount décida alors de confier la licence à Decipher.


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