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UNDERDEEP cover

UNDERDEEP CD Key

PC price comparison · UNDERDEEP · Oct 29, 2026

AdventureIndieRPGSimulation

UNDERDEEP is an idle RPG set in a gritty, immersive fantasy world, where you can dive deep into dungeon exploration and mapping. Blending the charm of classic RPGs with modern idle mechanics, it offers a rich and thoughtful gameplay experience.

Lowest final price

$6.49−35%

at Steam · Standard Official

Historical low: $6.49 on October 30, 2026

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Compare UNDERDEEP key prices

Sorted by final price including fees, never by commission.

  • SteamOfficial

    Standard · Steam · Global

    $6.49 · fees: none
    $6.49
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UNDERDEEP price history

Price history has been recorded since Oct 30, 2026.
The chart appears after a few days.

Historical lows by store

  • Steam$6.49

About UNDERDEEP

UNDERDEEP is an idle RPG set in a gritty, immersive fantasy world, where you can dive deep into dungeon exploration and mapping. Blending the charm of classic RPGs with modern idle mechanics, it offers a rich and thoughtful gameplay experience. Character Creation Your journey begins by creating your own character. Name them, choose their appearance, and set out on an adventure with your own unique character. Job System You’ll begin as a Newbie, starting from scratch. But as you gain experience, you can evolve into a wide range of roles—warrior, rogue, ruler, or crafter. Experience a highly flexible job system where your growth determines the path you take. Mapping At the heart of dungeon exploration lies mapping. Locations are automatically recorded as you explore, and you can place your own custom markers to keep track of important spots. Your observation and note-taking skills are key to successful expeditions. Over 500 Unique Items Weapons, armor, accessories, and more await deep within the dungeon. Use your gear strategically to venture into increasingly dangerous and rewarding areas. Skill Builds Build your own strategy with unique skill combinations. Some skills can create powerful synergies, dramatically amplifying your power. Craft your ultimate build and conquer the depths your way. Idle-Friendly Exploration Whether you prefer hands-on control or automation, you can choose between manual or automated actions during exploration. Set your strategy beforehand, and your character will continue adventuring even when you're not actively playing. Perfect for busy players who want to keep progressing. Casual Asynchronous Multiplayer You might encounter characters created by other players inside the dungeon. Customize your “dialogue” and “behavior” settings to prepare for these spontaneous encounters. Enjoy a relaxed, asynchronous multiplayer experience that lets you connect without pressure. Karma System Your behavior in the dungeon affects your character’s karma. Will you walk the path of light—or descend into darkness? The choice is yours. ------ Prologue ------ In a deep forest near the royal capital, a mysterious dungeon infested with monsters opened its maw. The first to venture inside was a nameless man. He returned drenched in blood, clutching an armful of gold. Word spread like wildfire, stirring the hearts of all who sought fame and fortune. Sword-bearing mercenaries, knights in pursuit of glory, and reckless adventurers made…Read more
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UNDERDEEP system requirements

Minimum

  • Requires a 64-bit processor and operating system
  • OS: Windows10
  • Processor: Intel Core i3 or equivalent
  • Memory: 4 GB RAM
  • Network: Broadband Internet connection
  • Storage: 2 GB available space

Recommended

  • Requires a 64-bit processor and operating system
  • OS: Windows10
  • Processor: Intel Core i5 or equivalent
  • Memory: 4 GB RAM
  • Network: Broadband Internet connection
  • Storage: 2 GB available space

UNDERDEEP key FAQ

+What is a UNDERDEEP CD key?

A UNDERDEEP CD key is a digital code that unlocks the game on a PC platform such as Steam. After redeeming it, you download the game directly from that platform and it stays in your library.

+What is the cheapest price for UNDERDEEP?

The cheapest UNDERDEEP key right now costs $6.49 at Steam, 35% off the regular price. We compare 1 offers from 1 store, and the price already includes payment and service fees.

+What is the historical low for UNDERDEEP?

The lowest price we have recorded for UNDERDEEP is $6.49 on October 30, 2026. Check the price history chart to decide whether to buy now or wait for the next sale.

+Is it safe to buy a UNDERDEEP key?

Buying from an official store such as Steam, GOG or Epic Games is always safe. Key resellers are often cheaper but sell keys second-hand, so check the region lock and buyer protection before you buy. Every offer on GameKeyDeal is labelled as official or reseller.

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