The most immediate impact of 616 is its striking visual and auditory design. The developers utilize a detailed pixel art style that emphasizes the decay of the game's world. From the flickering light of underground stations to the grotesque, fleshy designs of its monsters, the visuals create a sense of persistent dread. This is complemented by a haunting musical score that reinforces the game’s themes of isolation and religious zealotry.

Combat in the 616 version is fast-paced and unforgiving, prioritizing aggressive play and precise timing.

There Is No Light 616 is more than just a promotional demo; it is a brutal introduction to a world where hope has been replaced by a religious fervor centered on "The Great Hand." Set in a dark, dystopian underground, the game explores a society living in the aftermath of a global catastrophe. The "616" version provides a vertical slice of this world, focusing on the core combat loops and the haunting atmosphere that defines the full experience.

While the story takes a backseat to action in the 616 version, the narrative is woven through the environment and NPC interactions. The world is divided into various factions, such as the Solar Corps Guard and the rebels of the Path of Pride. Players are introduced to a morality system where "Karma" affects how the world perceives the protagonist, a mechanic that hints at the multiple endings available in the full release.

: Unique to the 616 version, this mode allows players to test their skills against waves of enemies, showcasing the depth of the combat system beyond the narrative-driven locations.