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The Terran Trade Authority Roleplaying Game



A sci-fi RPG based on the comic series by Stewart Cowley¸ started in 1978 with Spacecraft 2000 to 2100 AD¸ created in cooperation with the author. It uses a variant of the ""Omni RPG System"" used by other RPGs from Morrigan Press. Action resolution uses skill or attribute minus difficulty + 1d20¸ interpreting the results on a universal degree of success table. - A description from https://darkshire.net/jhkim/rpg/encyclopedia/ with kind permission of John H. Kim"


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