The Trinity Universe is a science fiction-based game setting, using in an alternative history which connects the following product lines:
Adventure!: Pulp action in the 1920s. An era of excitement and imagination where men are forthright and women are courageous. An era of globe-hopping exploration and mad science. Excitement awaits in the lofty skyscraper-penthouses of New York City and the squalid slums of Hong Kong, in the frigid wastes of Antarctica and the sweltering jungles of the Congo.
Aberrant: Superhero science-fiction set in the early 21st century, before the devastating war against humanity. Players portray beings of vast power, and experience their struggles to avoid the coming cataclysm.
Trinity: (Originally ÆON.) A science fiction game set in the 2120s. Humanity has ventured to the stars. Yet amid the wonders of this new age, mankind faces many dangers from without and within. Alien races, fractious colonies, contending governments, ruthless corporations and aberrant mutations all vie for supremacy.
The corebooks have been published using both in the Storyteller system (1997) and in D20 (2004) rules.