Worlds
Worlds is a role playing game supplement published by Decipher in 2005 as an eBook in Adobe Acrobat PDF format. It is the seventh official book released for Decipher's , and is the first such official supplement for the game released only as an electronic document.

The supplement itself documents over sixty worlds seen in the various incarnations of Star Trek, and gives game stats for each to use as locations for your characters' adventures.

Description
From the back cover
"You keep wondering if man was meant to be out here. You keep wondering and you keep signing on...." 
– Captain James Kirk, The Naked Time

To explore strange new worlds...

The burning sands of . The icy chasms of Andoria. The storm-swept skies of Qo'noS. Worlds presents them in all their glory, ready for your away team and fully described for your STAR TREK Roleplaying Game series. From Iconia to Rigel X, the skies of your series suddenly got a little more crowded. Report to Stellar Cartography and prepare to transmit navigational coordinates – countless new worlds of adventure await you!

Worlds includes:

 Comprehensive entries for over 62 planets from every STAR TREK era, including such fan favorites as Romulus, Cardassia Prime, Bajor, and Ferenginar. 
 Never-before-seen historical, cultural, and planetological information, complete with episode ideas and detailed maps for each world. 
 A detailed star system and planetary creation system, including new planetary design methods true to 21st century science and to STAR TREK canon.

Availability
As of late 2008, Decipher has let lapse their license to produce/sell RPG material based on Star Trek. Thus, this supplement is no longer available through the sole online vendor, Drive-Thru RPG.

Role-playing games
eBooks