While often categorized by players primarily within the horror genre, the indie game Silt foregrounds environment and ecological systems as central components of its gameplay. Rather than treating the setting as a passive backdrop, Silt embeds ecological themes into its formal design structures, shaping player interaction through environmental constraints and engagement with nonhuman entities.
Silt repositions the human within the environment by structurally undermining the concept of human sovereignty. The player navigates a surreal, two-dimensional, black-and-white underwater puzzle-adventure as a diver who awakens on the ocean floor. Progression relies almost entirely on the diver’s unique possession ability, which allows the player to project a beam of energy from their helmet to transfer control to nearby marine organisms. This procedurally creates an uneasy experience of (loss of) control that indirectly relates to the experience of the climate crisis, i.e. noticing the exploitation of one’s natural environment but being unable to completely reject it, as the diver cannot move freely or bypass environmental hazards without external aid. Players must perceive and act upon the specific ecological affordances of nonhuman life-forms, e.g. possessing piranhas to bite through structural restraints or hammerhead sharks to smash obstacles.
During the possession of a marine creature, the diver’s physical body remains completely stationary and vulnerable, shifting agency entirely to the host organism. By forcing the player to view and navigate the world through the eyes of various sea creatures, the game limits human independence and elevates the vitality of the nonhuman world. It structurally demonstrates that humans are not at the top of the ecological hierarchy but are instead dependent on interspecies collaboration to survive.
Silt omits verbal communication and dialogue, utilizing interpretive blanks that require players to deduce narrative meaning from environmental cues. Through its environmental storytelling, the game depicts a superficially coherent marine ecosystem that has persisted after an unspecified catastrophic event pushed human civilization past its adaptive capacity. As players dive deeper, they discover a surreal ocean where nature has evolved into bizarre forms to survive amid the remnants of an industrial, technology-oriented past. The environment functions as a historical record of a conflict between nature and human technology: The complete absence of living human NPCs emphasizes the oppressive quality of isolation. Instead, the corpses of past divers are found scattered across the seafloor, visually merging with the marine flora and titular sediment.
Defeating the game’s four ‘goliath’ bosses, which have evolved by combining technology with marine biology, transports the diver to a fractured, industrial environment containing a massive, dysfunctional machine. Further exploration reveals that this ruined world was once ruled by humanoid, foxlike masters who built their civilization by enslaving divers and exploiting the vital life force of other organisms. The statues of these ancient masters are physically composed of the sacrificed bodies of previous divers, and the machines themselves are molded precisely to the diver’s silhouette. This imagery underscores a tragic dependence as the machines are left forgotten and useless without human presence.