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Watch trailer on Steam ↗Unto Deepest Depths
McCollum Games · Published by McCollum Games
9 user reviews — 100% positive (9 reviews) · 27 achievements
Last updated 28 Sept 2026
Unto Deepest Depths is a turn-based strategy game where all units must move and attack every turn. Build your party, upgrade your units, and lead them into the unknown to vanquish the horrors below in this punishing roguelite where any move could be your last.
£5.89
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Price history
Strategy · 2025 · More £5 - £15 games
Lead your units through perilous depths in Unto Deepest Depths, where every turn could be your last. Build, upgrade, and strategize to overcome the horrors lurking below in this challenging roguelite experience from McCollum Games.
About this game
Unto Deepest Depths is a turn-based strategy game where all units must move and attack every turn. Build your party, upgrade your units, and lead them into the unknown to vanquish the horrors below in this punishing roguelite where any move could be your last.
Challenging turn-based combat with a twist
Battle through tactical turn-based combat where death is always just around the corner, made more challenging due to a simple rule: Every turn, units must move and attack. No waiting for enemies to come to you, and be mindful of your more destructive units - they may take down a few allies if you're not careful.
Battle powerful, dark foes
Venture across the land and into the depths below to fight off corrupt, menacing creatures not of this world. Powerful bosses, life leeching enemies, and more await you in the depths.
Build your party
Gain XP through battles and events and spend it to hire, promote, and upgrade units as you see fit to build a powerful party.
Features
Build and grow your party with a variety of unit types and specialties. Elite and specialized units can be unlocked by promoting units with the XP earned from battle.
Grow your units with powerful upgrades, but choose wisely as not everyone can specialize in everything.
Battle through procedurally generated conflicts set across five unique biomes as you venture further into the depths below.
Face powerful bosses and elite enemies along your journey.
Choose your path and respond to unexpected challenges and events as you venture forth.
Unlock additional difficulty levels, powerful upgrades, and unique starting parties as you play the game.
System Requirements
Will my PC run this? →Minimum
- Requires a 64-bit processor and operating system
- OS: Windows 10 or later
- Processor: Multi-core processor
- Memory: 4 GB RAM
- Graphics: OpenGL 3 compatible GPU
- Storage: 300 MB available space
Recommended
- Requires a 64-bit processor and operating system
Supported Languages
Latest news
Patch NotesOfficial
Patch 1.6.3 is now live
Hello adventurers!Another small update going out today with a few quality of life improvements:The chosen upgrade path for a unit will now highlightUnavailable upgrades will display in a darker color than locked upgradesClarified Battle Scars descriptionAmbush event will not draw immediately after starting a runThank you for playing!Read full article on Community Announcements (Jason)Patch NotesOfficial
Patch 1.6.2 is now live
Hello adventurers!Small update going out today that addresses the following issues:Corrected a typo in one of the eventsFixed a rare bug that could lead to incorrect unit dataMinor patches to UI for more consistent tooltip functionalityChanged the description of the Survivor upgrade to better clarify how it worksAdditionally, the demo has been updated to fix a loading bug and bring it to parity with the full game, bringing with it improvements to controller support, UI, and more. As part of this upgrade, the preview of the unlockable backgrounds have been removed and are now reserved for the full game.Thank you for playing!Read full article on Community Announcements (Jason)AnnouncementsOfficial
A new demo is now available!
It's been a little bit since the last update, but that's only because the playtesters have been hard at work running the game through its paces, and today I'm pleased to share the results of that endeavor with you! As opposed to the previous updates, which contained a full changelog, there's really too many changes to go through them one-by-one, so instead here's the major changes:Unit placementYou can now place your units before starting battle, letting you get everyone positioned just right. The game will also automatically place your units at approximately the same starting position from battle to battle, subject to map constraints.Key rebindingYou can now rebind the keyboard shortcuts to suit your play style. Note that only keyboard inputs can be rebound. Mouse and controller inputs are fixed.Blocked attack previewsUnits will now show hatched attack cells to reflect areas they may be able to attack after other units move out of their way.Other significant changes:Version number is now displayed on the main menu. You'll notice the version number in-game is different from the previous demo versions shared on Steam so that it aligns to the full game's release version.Progress is now savedStarting name, background, and party and remembered between runsQuitting the game will now forfeit battleSignificant overhauls to game balanceVarious adjustments to the UI to result in a more consistent and usable layoutSeveral events have been reworked, removed, or replacedFixed a number of critical and non-critical bugsThank you all for playing! I look forward to sharing the full game with you soon!Read full article on Community Announcements (Jason)AnnouncementsOfficial
Check out Astro Protocol!
Hello adventurers!After you've ventured into the depths below, why not go on an adventure in the stars above!Our friends over at Null Vector Studios have just announced Astro Protocol, a very cool space-themed 4X game where runs can be played in just a sitting or two. If you've enjoyed the quick, approachable strategy of Unto Deepest Depths, this one's worth checking out!Read full article on Community Announcements (Jason)AnnouncementsOfficial
Demo v1.6 is now available!
Hi all! I'm pleased to announce the next release of the demo today! Here's some highlights along with the full changelog. Player backgrounds You can now try out a few player backgrounds when starting a run. Each one will change the rules of the game, so pick one based on your desired strategy and challenge! {STEAM_CLAN_IMAGE}/45183306/07a781d99773a97984e036734d7c02a12524079a.png Event images Each event now has a unique graphic to help you dive into the world that little bit more! {STEAM_CLAN_IMAGE}/45183306/902a0e13a1c22271545915b5ff90cd1e760eeffb.jpg Player upgrades You, the player, can now find your own upgrades out in the world! These are rare and powerful, with significant impacts to gameplay, so choose wisely. {STEAM_CLAN_IMAGE}/45183306/883b3f1445519ff20fda9d25024ac80c04773fd7.jpg What's new Game settings are now saved Units now have names Units can participate in events Animate from start of map to beginning when starting a run Added a few character backgrounds to choose from when starting a run Added two new potential enemies to fight Events now have images to accompany the text Added the option to disable screen shake Added tooltip icons to help denote unit attacks The player can now obtain rare, powerful upgrades over the course of gameplay Added the pyromancer as an upgrade to the mage You can now start a new run from the game over screen Added a new tutorial level to help explain some unit icons Promote button now disables itself when there are no further upgrades available What's changed Starting party choices have been changed Lancers now have better movement range, but cost slightly more to promote Adjusted enemy AI Adjusted promotion costs Enemies that die over a pit will fade out Changed the cell highlight color to make it easier to see what cell you're hovering over Bandits event now takes you to battle if you refuse Updated license info to be held within the game rather than linking to a site Balance tweaks What's fixed Fixed line drawing bug on w...Read full article on Community Announcements (Jason)






