Detectives United: Vengeance from the Past is a hidden object puzzle adventure from Elephant Games. A wave of mystical activity has swept through the city, drawing detectives Dorian and Anna to one of the Brown family's oldest mansions to confront something rooted in the past. When both go missing during the investigation, their colleague Ewan must mount a rescue, enlisting the help of James Blackthorn to crack a case that has spiralled beyond any single detective's reach.

The mansion itself sits at the centre of the danger, filled with artifacts described as dangerous and stalked by monsters. A mysterious figure driven by vengeance lurks behind the chaos. Players take control of all four detectives across the investigation, each drawn into the same tangled web of threats. The gameplay follows the point and click adventure template, tasking players with finding cleverly hidden objects scattered through detailed scenes while solving puzzles to push the story forward.

As a Collector's Edition, this release bundles a bonus game centred on travelling through time alongside the main campaign. Collectibles are scattered across an Expedition mode, and players can replay hidden object scenes at their leisure. Published by Big Fish Games, Vengeance from the Past rotates between its ensemble cast while threading a single mystery through each perspective.