The gamemode "Aftermath" is developed by Silverlan, he is the only one who owns and works on this gamemode. This gamemode is based on the game "Fallout3", but using different ideas from The Hl2 Renaissance pack (Created by the same author) and Hl2 and others games. "Aftermath" is a Rpg-like gamemode in which you (will be able to) interact with other players, kill creatures to gain experience, skills, and complete quests. This Gamemode is currently in beta, and is open to the public for now.
There are companions ingame that players will or may have. They are summoned and level up just like the player.(Its pre-alpha so it is still being worked on.)
Cool! DOgs!
dogmeat would pwn that vishious dog