Portal: After Hours is a new mod for Portal 2, which aims to re-capture the spirit and simplicity of the original Portal in a brand new narrative, with much more difficult puzzles aimed at the seasoned Portal player. Created by ABNTGeneric, the mod is now looking to release "Episode 1" next month, and a new official trailer is now out showcasing the mod.
Promising brand new stories, original characters and voice acting, the mod is a compelling one that will fit "snugly into the existing universe", as the mod's creator explained on our sister site, ModDB;
New and improved testing elements will be present throughout the game, including, but not limited to, modified versions of existing community made fizzlers. There will be multiple original characters, voice acting, and a cohesive story line that fits snugly into the existing Portal universe.
The mod is going to be released in two parts, with Episode 1 coming on August 15th. In the mean time, you can follow progress over on it's ModDB page.