I really like the fanfiction titled 'Clementine's Journey Beyond'. It delves deeper into Clementine's post - game experiences. It has a lot of interesting plot twists and the way it portrays Clementine's growth and development is quite engaging. The writer has clearly spent a lot of time understanding Clementine's journey in the original game and uses that knowledge to create a compelling story.
Sure, it exists. The Walking Dead game is based on the comic world and features familiar settings and storylines. However, it might have some creative alterations to make it more engaging for the gaming experience.