Game Overview
Beneath a grim alternate 1979 Tokyo, the newly discovered Yomi cavern system promises impossible wealth and an equally likely death underground. Undernauts: Labyrinth of Yomi is a first-person, grid-based dungeon RPG built around the fear of getting lost, running low on supplies, and meeting monsters far stronger than they first appear. You join the Cassandra Company’s expendable underground workforce, assembling a six-person crew to mine rare resources and uncover the truth behind a sprawling, hostile abyss. Its industrial horror mood, unsettling enemy designs, and oppressive tunnels make every return trip to the surface feel earned.
Movement follows classic dungeon-crawler rules: map each square, search for hidden routes, manage traps, and decide how far to push before your party is too battered to continue. Turn-based battles emphasize party formation, elemental weaknesses, defensive timing, and specialized roles, while character customization lets you shape warriors, casters, healers, and support members around your preferred tactics. The standout Switch Boost system allows characters to burn accumulated power for stronger attacks or useful dungeon tools. Those tools create temporary ladders, bridges, and doors, turning exploration into a practical puzzle rather than a simple hunt for keys.
Yomi’s layouts reward careful note-taking and backtracking, but the game usually gives players enough tools to avoid the most frustrating old-school dungeon-crawler habits. Its art leans into grotesque body horror and stark science-fiction imagery, giving the labyrinth a more distinctive identity than many fantasy-focused genre peers. Compared with Etrian Odyssey or Wizardry, it is more linear in its overarching narrative but still demanding in its combat and resource management. Veterans of Experience Inc.’s dungeon RPGs find plenty of depth in its party-building and increasingly dangerous floors, while newcomers who can tolerate a tough learning curve get a focused, atmospheric introduction to the genre.
Screenshots
Installation
- Click the green button below to be redirected to UploadHaven.
- Wait 15 seconds, then hit “Free Download.” (Free downloads may be slower — upgrade to UploadHaven Pro for faster speeds.)
- Once downloaded, right-click the .zip file and choose “Extract to Undernauts: Labyrinth of Yomi.” (You’ll need 7-Zip for this.)
- Open the extracted folder and run the game as administrator.
- Enjoy! 🎮 If you see missing DLL errors, check the _Redist folder inside and install what’s needed.
System Requirements
- OS: Windows 10
- Processor: 2.2 GHz speed or better
- Memory: 2 GB RAM
- Graphics: 1280×720
- Storage: 2 GB available space
Setup Guide & Troubleshooting
How do I fix missing DLL errors for Undernauts: Labyrinth of Yomi (v2022.07.13)?
After extracting Undernauts: Labyrinth of Yomi (v2022.07.13), navigate to the _Redist or _CommonRedist folder inside the game directory and install DirectX, Vcredist, and any other dependencies included.
What should I do if the downloaded file is corrupted?
The full archive is 2.02 GB — make sure your download completed fully before extracting. Use 7-Zip to extract the files. If you still see a "file corrupted" error, re-download and try again.
Why should I run the game as administrator?
Right-click the game executable and select "Run as Administrator" to avoid save file issues and permission errors. This is especially important on the first launch.
How do I update my GPU drivers for this game?
The game won't launch — what should I try?
Try running in compatibility mode, install the latest DirectX runtime, or install the All-in-One VC Redist Package.
My antivirus is blocking the game — is it safe?
Antivirus false positives are common with pre-installed games. Temporarily pause your antivirus during extraction to prevent it from quarantining game files. You can re-enable it after the extraction completes.