Conversion

The title doesn't really hint that this is a game from the Portal series. Conversion This game will tell the story of the events that took place between the first and second parts of this famous and highly original puzzle game. This isn't an add-on or a mod; it's a completely separate project that deserves special attention. It will allow you to explore previously unexplored corridors of the Aperture Science complex, meet new characters, and solve challenging puzzles. Basically, you won't have to wonder what happened after GLaDOS's computer was destroyed.