So, there will be a total of around 15-16 maps overall in this map. This may seem like far too little, but each map will have many areas to explore and discover as well as having 3 "Challenge Tests" built into the campaign. Each map should take around 15 minutes.
I'm hoping to submit "Before Portal" to Greenlight around Valentine's Day, and for the first part of the mod to be released shortly after, providing my mod is upvoted.
There will be three chapters: Welcome to Aperture, and GLaDOS. Right now, they will be separate, but that may change.