The 7th Guest Part III: The Collector was intended to be the official second sequel to the popular 1993 game The 7th Guest developed by Rob Landeros and Graeme Devine (the original creators of The 7th Guest). The 7th Guest Part III: The Collector was to be released in 2004 by publisher Lunny Interactive, but after much delay the game disappeared off the publisher's website. Shortly after, the game's official website (which had only displayed a brief summary of the story and the first teaser trailer) also disappeared. After the game's failed 2013 Kickstarter crowdfunding campaign, the project has effectively been cancelled.
The 7th Guest Part III: The Collector takes place after The 11th Hour; Henry Stauf has moved from his mansion in up-state New York to a lonely and odd European village where he has opened a museum filled with various artifacts that tell the evil history of human kind. The player is the "visitor" in Stauf's museum and their goal is to explore its contents and learn some interesting and entertaining facts about infamous events.
- Visitor The Visitor is the player of the game.
- Henry Stauf Now the curator of the museum, Stauf's goal in the game is to challenge the Visitor through a series of puzzles designed to both intrigue and confuse the mind.
- Blue Angel The Blue Angel is the Visitor's guide through the museum. She provides helpful tips and clues to the gameplay.
The main objective of the game is to open all 13 galleries in a specific order determined by the Blue Angel. Stauf, however, will try to get to the galleries first and will be an extra obstacle to the player while in the gallery. Successful opening of a gallery will allow the player to explore the area freely and both play (solve puzzles or "Hands On Displays") and view the available artifacts.
In October 2013, Trilobyte, re-launched under Rob Landeros, started a Kickstarter crowdfunding initiative to re-develop The 7th Guest Part III: The Collector. The crowdfunding campaign ended on December 8, 2013 with the project having failed to achieve its funding goal of $435,000. The project raised a total of $121,318 from 1,713 backers.