A remake of the original Portal mod, Memories! The idea behind this is to make an episodic mod, which you can play as it grows and every new chapter will be based on a whole new theme.
You are a test subject in the Aperture Science lab who winds up in another "puzzling" situation. You are also in a race against an ever wicked "test dungeon master" trying to make life hard and success a relative term.
This is the second map in a series that began with 'Sphere of Roundness'. Version 2.0 of that map is also included in this release. They also transition into each other to make a loop.