Escape from “Yomi” – a dungeon filled with riches – and danger.
You have been recruited into the Undernauts – a team of brave subterranean adventurers who comb the depths of a massive, monster-infested labyrinth in search of priceless resources.
Make use of your powerful skills and magic items to create exits and reach the surface alive.
As a Dungeon RPG, the player must dive through many dungeon levels and move through a grid system to find the correct path to proceed.
Players create a party of 6 in order to fight battles and level up while proceeding through the game's storyline.
Use the "Switch Boost" system to defeat hordes of monsters and create magical doors, ladders, and bridges to escape.
Make use of powerful skills and magic items to reach the surface alive.
Login or register at the official Steam Website and download Steam client
Install and start application, login with your Account name and Password
Click the Games Menu.
Choose Activate a Product on Steam...
Follow the onscreen instructions to complete the process
After the successful code verification, go to the "MY GAMES" tab and start downloading.
News & Updates
2025-09-10
National Video Game Day Becomes a Full Week
Gaming has grown into a global phenomenon, so of course it earned its own special day! It first kicked off in the 1990s and was originally marked on July 8th, before officially moving to September 12th. To celebrate this year, we’re running a huge YUPLAY storewide promo! Everyone who places an order between 10.09 CET and 17.09 CET will be automatically entered — and at the end, 21 lucky winners will receive a full refund of their order.
Gamescom 2025 has been a total hit this month, so we dedicate our monthly recap rubric completely to it and the highlights we would like to present from it! Get ready for a grand total of 12 exciting news pieces around the latest hit titles, media as well as hardware and in general what you should be looking around for in the coming months and much more. From Borderlands 4 to Black Ops 7, from Little Nightmares III to Ninja Garden 4, and even some NVIDIA news…
