House of 1000 Doors: The Palm of Zoroaster is a casual computer game in which the player has to find multiple hidden objects on the game screen. The game is set after the events that happened in Family Secrets, another House of 1000 Doors game. The 1000 Doors residence is being threatened by a cursed gem that kills a number of people on its trail. Gabriel, the leader of the Mystical Dwelling, has summoned Kate, the main character of the story, to find out more. In this game, Kate travels to a number of locations such as Jerusalem and Madagascar to find out how to nullify the power of the cursed gem. The final objective of the game is to obtain the sacred Palm of Zoroaster.
In this game, there are four portraits that represent different locations where the levels take place. In each stage, the player has to find hidden objects on the screen. A list of objects is given; when an item is found it is crossed out. The hidden object screen is also interactive—some of the spots can be zoomed in to find some of the other items on the list. There are also items that must first be assembled to obtain the listed one.