Homestuck by Andrew Hussie

In a sprawling, multimedia narrative that blends webcomic, animation, and interactive elements, a group of teenagers embarks on a cosmic adventure after playing a mysterious online game that alters reality. As they navigate through intricate timelines and alternate universes, they encounter a host of eccentric characters, including trolls from another dimension, and confront themes of friendship, destiny, and the consequences of their actions. The story weaves humor, drama, and complex storytelling into a unique experience that challenges traditional narrative forms.

The 17152nd greatest book of all time