
Enemies defeated and items taken are permanent for the duration of a playthrough, with guarded weapon caches scattered throughout the island. The game takes place on a rather large, nonlinear island, with no load times in between sections. Some sections require the player to strafe, crouch, or jump. These vases also grant one-time per playthrough power ups. To beat the game one must collect a number of vases spread throughout Matinicus Isle, each containing a symbolic part of Tess Conway's spirit. The game does not come with any form of multiplay. These include a crowbar, dual-pistols, a shotgun, a Thompson submachine gun (Tommy-gun), Molotov cocktails, a flamethrower, and a magical Ankh which can be used to wipe out many enemies at a time. The gameplay follows the standard set by most first-person shooters with the player using an assortment of weapons. An unusual aspect of the game is that live action full motion video characters also sometimes overlap with the real time gameplay, without breaking to cut scenes. Throughout the game the plot is slowly revealed to the player through numerous cut scenes performed by live actors. The player's objective is to find, and destroy, the Water-Clock, and discover the secrets of the estate, all while beating back the many horrors that now occupy the island from beyond the grave. In 1932, during the night of the Summer Solstice, heiress Tess Conway, while attempting to use a mystical Ancient Egyptian Water-Clock which purportedly grants eternal life, vanished, along with many of her society friends. The player takes on the role of a former Egyptology student, trapped within the estate of a wealthy heiress on Matinicus Isle, Maine. The update work was done by Jordan Freeman Group and published by ZOOM Platform and Prism Entertainment. On July 23, 2015, ZOOM Platform announced the release of an updated version of Killing Time exclusively for their store.

Originally an exclusive for their 3DO Interactive Multiplayer console, it was later remade for the Windows platform in 1996 by Logicware and for the Macintosh after the 3DO system was discontinued. Killing Time is a horror-themed first-person shooter video game developed by Studio 3DO. 3DO Interactive Multiplayer, Windows, MacOS
