Virtual Nightclub: A Game About Time (Windows, Thumb Candy, 1997)
An ambitious sci-fi adventure game which became lost media until 2016. You can download it, pre-configured to run on modern versions of WIndows, here, including a comprehensive guide and a very different unfinished beta version.
You can read the Lost Media Wiki article about it here, and read the guide’s writer’s thoughts on the game here.
