Moonmilk Games Announces Cave Expedition, a Realistic Co-Op Cave Crawler
Moonmilk Games has been posting development videos of its cave voxel system and SRT simulation since 2024, so this announcement formalizes a project the studio has been showing publicly for roughly two years.
Key Facts
- Moonmilk Games announced Cave Expedition on August 31, 2026, a cave exploration simulator for solo play or up to four players in online co-op.
- Cave Expedition is planned for release in 2027 on PC (Steam), with Nintendo Switch, PS5, and Xbox Series X|S versions planned.
- Moonmilk Games records Cave Expedition's environmental sounds and textures in real caves around the world, and its staff operate as an actual cave exploration team.
- Cave Expedition tracks player hunger, fatigue, and body temperature, and lets players buy and upgrade equipment in a shop.
Reporting from 3 sources: Automaton, Denfaminicogamer, Game Spark.
Sweden-based studio Moonmilk Games announced Cave Expedition, a cave exploration simulator for up to four players, on August 31. The game casts players as cave explorers pushing into unexplored caves, with locations that include flooded passages, narrow gaps, and huge cavities. The studio records environmental sounds and textures in real caves around the world, and its staff operate as an actual cave exploration team. Gameplay covers horizontal crawling, vertical descents with ropes and anchors, and underwater diving with scuba gear. Players customize equipment before heading out, choosing headlamps, climbing gloves, and SRT gear, and deeper runs demand more tools. A shop lets players buy and upgrade equipment, and the game tracks hunger, fatigue, and body temperature. The studio plans a 2027 release on PC (Steam), with Nintendo Switch, PS5, and Xbox Series X|S versions planned. An official Discord channel is open for feature requests.
The announcement trailer shows players drilling into rock faces, setting anchors, and rigging climbing ropes, and the game includes a shovel for digging and clearing obstacles. The studio splits the caves into dry caves and wet caves, with flooded sections requiring diving equipment. Deeper runs demand more gear, and a shop lets players buy and upgrade equipment, with rewards tied to completing cave maps.
The game also tracks hunger, fatigue, and body temperature, and deeper areas can reveal suddenly opening cavities and faintly glowing organisms or plants in the dark. Moonmilk Games has been posting development videos of its cave voxel system and SRT simulation since 2024, and the Steam page states the team is developing with the goal of delivering the cave exploration experience without compromising realism. As of the article date, the game does not support Japanese. The studio has opened an official Discord channel and is soliciting feature requests and opinions.
Synthesized by Yomimono from the 3 cited sources below, including Japanese-language reporting where cited, then editorially reviewed before publishing.