- Sweden’s Moonmilk Games to participate in the Unity booth at BEXCO from November 19–22
- An exploration simulation of an unknown underground space supporting single-player and up to 4-player co-op.
‘Cave Expedition’, a cave exploration simulation by Swedish indie developer Moonmilk Games, will be available to visitors at the Unity booth in Exhibition Hall 2 of BEXCO, Busan, from November 19 to 22.
‘Cave Expedition’ is a game where you explore unknown underground spaces alone or with up to four people, and the Steam page describes it as the ‘ultimate caving simulator’.
The developer stated that they utilized materials directly collected from real caves for the game’s graphics and sound production. However, specific development technologies or detailed specifications have not yet been disclosed.
From narrow crevices to vast spaces, dry and underwater cave exploration
In ‘Cave Expedition’, players explore diverse dry and underwater terrains, ranging from narrow crevices they must squeeze through to massive cavities. As they descend deeper underground, more specialized equipment and thorough preparation are required, and meticulous pathfinding and exploration planning determine how far they can go.
Players must carve out a safe path by installing ropes to descend steep vertical sections, swimming through waterlogged passages, or passing through narrow rock crevices. The Steam page features key tags that showcase the game’s identity, such as exploration, simulation, realistic, underground, atmosphere, horror, and sandbox.
From ropes and SRT equipment to scuba diving, preparation before departure is key.
The process of selecting and upgrading equipment before setting out on an exploration is also a core element of the game.
Players can meticulously prepare equipment ranging from helmets, headlamps, climbing ropes, anchors, and Single Rope Riding (SRT) gear, to work clothes suitable for the cave’s internal temperatures and scuba gear for traversing underwater sections. They can also equip shovels and winches to dig out or clear blocked passages themselves.
The Steam page also features inventory management and tags for crafting, physics, and mining. The preparation process of assembling optimal equipment tailored to the terrain ahead and established exploration plans essentially functions as an integral part of the actual cave exploration.
From single-player, online, and LAN co-op to cross-platform multiplayer
The game supports both single-player and up to four-player co-op modes. In co-op mode, players must closely coordinate tasks such as setting up ropes and navigating steep vertical sections, and meticulous planning and smooth communication are also considered key factors determining a safe return to the surface.
In addition to online co-op, it extensively supports local network (LAN) co-op and cross-platform multiplayer. A level editor that allows users to design and share cave terrain, as well as Steam Workshop features, will also be provided in the future.
A Swedish developer founded by actual cave explorers… Recreates sounds and textures collected from caves around the world
Moonmilk Games is a Swedish indie developer, and its co-founders, Martin Calander and Fredrik, are cavers who enjoy exploring real caves.
The development team explained that they utilized the vivid sounds and rock textures collected by personally exploring caves all over the world directly in the game’s production.
The studio stated that, based on years of accumulated game development and rendering technologies as well as hardware optimization experience, they aim to create a title that runs smoothly on devices of various specifications.
As development is currently in progress, specific features and content may change in the future, and the developer is actively collecting user feedback through the official Discord channel.
Windows, macOS, Linux, and G-Star Unity Booth Demonstration Confirmed
According to the Steam page, ‘Cave Expedition’ offers broad support for Windows, macOS, SteamOS, and Linux environments. It provides a total of 21 languages, including Korean, with official support for the interface and subtitles. Audio is available in English, Swedish, and Japanese.
The store page displays the selection image for ‘INDIE Live Expo 2026.12.1 Official Selection’. As of the time of writing, general user reviews have not yet been registered, and two curators have left reviews. No separate market reaction data, such as wishlist numbers or foreign media reviews, has been confirmed.
Meanwhile, ‘Cave Expedition’ is scheduled to be demonstrated live at the Unity booth at G-Star 2026, which will be held at BEXCO Exhibition Center 2 in Busan from November 19 to 22.
Information regarding ‘Cave Expedition’
| item | detail |
|---|---|
| Title | Cave Expedition |
| Developer | Moonmilk Games |
| Publisher | Moonmilk Games |
| Genre | Simulation, Adventure, Indie |
| platform | PC (Steam / Windows, macOS, SteamOS·Linux) |
| Release date | Undecided |
| Player count | Single Player, Up to 4-Player Online/LAN Co-op |
| language | 21 languages including Korean (Korean interface and subtitles) |
| Exhibition Schedule | November 19–22, 2026, BEXCO Exhibition Center 2, Unity Booth (G-STAR) |
| Reactions/Evaluations | No Steam user reviews, rated by 2 curators |
| Steam Page | Shortcut |
