Demon's Mirror

About this game

Demon’s Mirror combines roguelike deckbuilding and a grid manipulation battle system to create a unique experience where Slay the Spire meets Puzzle Quest.

Play as one of three trapped souls and embark on a treacherous journey where your worst nightmares lie in ambush! Collect new cards and gain power as you navigate an ever-changing labyrinth of increasing challenges to solve the mystery of the demonic mirror that trapped you here.


Discover over 200 cards to create the ultimate deck! Select cards that grant special powers to deal heavy damage to your enemies or set up clever synergies and punishing combos. Get creative and experiment!




Combining deckbuilding and chain-3 mechanics puts you in control of the battle! Collect and wield powerful cards to manipulate the grid and unleash devastating combos upon your foes while chaining tiles to attack, defend, gather resources or decrease your enemy’s power. The added complexity brings depth to traditional deck-building, providing a fresh and engaging experience.




Encounter formidable enemies and unpredictable scenarios designed to test your wits. Hasty decision-making will lead to certain death. Only by mastering the strategic balance between playing cards and chaining tiles can you hope to survive!




No two playthroughs are ever the same! Unique enemy encounters, items, and randomly dropped cards are generated with each run. Discover chance events where you’ll make interesting choices, meet strange creatures, and uncover hidden secrets about the world, ensuring near-endless replayability.

Latest news

• Patch Notes·18 Oct 2024Official

  Demon's Mirror - October 18th 2024 Patch

  Demon's Mirror is taking the world by storm, and these days it's hard not to notice! It seems like everywhere you look, people are embracing the spooky vibes of the game. Earlier this month, my neighbors started putting up Demon's Mirror lawn decorations of scary werewolves, ghosts, and ghoulish creatures. Heck, even the tree in my yard is looking rather grotesque these days! Wait. That... that might just be a dead tree in my yard. Bummer. Either way, we've got a fresh set of Demon's Mirror patch notes coming your way. Take a look! Patch Notes (Oct 18, 2024) 1. Card Fixes and Changes: Competitive: Lowered its AP cost to 0. Maniacal card: Increased the amount of the Stable buff you receive to 2(3). Particular: Increased tile damage to 5(10) and lowered the cost to 0. Safe Space: increased its tile damage to 8(13). 2. Other Fixes: Added the Lotus Flower boss trinket. Changed the Scroll of Memory so it reduces the cost of the cards by 1. Make sure you can target enemies after resetting the game during a battle with an enemy that has Taunt. Updated the Weak to Essence/Willpower buff descriptions to mention the "number of tiles in the chain". Updated the Zeal buff description so it says it doesn't modify junk chains. Fixed the One Step Ahead card so you only get the bonus from enemies that are attacking. Fixed chain tooltips so they show the correct length when chaining void and caltrop tiles when you have Zeal. Give money as a reward after the 3rd boss, when it's not the end of a run. (Minor spoiler) Updated the art for the secret bosses (they’re now blue). Changed the french translation for Trinket from Amulette to Bibelot. Fixed the starting money for when the Materialism modifier is enabled and you start a new game as a different class than the one that was loaded (the starting money was getting set to 0!). Modifiers, Deck, Pause button, and current Trinket tooltips all now function on Draft Relic Screen. Cards and Trinkets are marked as encountered when they appear ...
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• Patch Notes·18 Sept 2024Official

  Demon's Mirror - September 18th 2024 Patch

  Hi there Demon's Mirror fans! We've heard your feedback and have a bevy of fixes and changes coming your way. The biggest of them is the addition of VSync! All this time we were so focused on syncing our horizontal lines, we never stopped to think about the vertical ones. This madness ends today. Check out the patch notes below for every juicy change, but while we've got you we'd greatly appreciate it if you could leave a positive review for the game on Steam! Steam reviews have a massive impact on surfacing games to others, so in lieu of a guerilla "street team" marketing initiative, we'd love your review! Every thumbs up counts!! Thank you!!! Patch Notes (Sept 18, 2024) 1. Added a VSYNC setting 2. Card Fixes and Tuning: Surge: Fixed its draw effect so it only triggers when you have enough essence. Fortify: Its bonus power should save correctly after closing and reopening the game. Short-Tempered: Changed its upgrade so it costs 1 less AP instead of giving +1 STR. Howl: The upgrade now gain Retain instead of lowering its cost. Injure: Increased its base damage to 4. Slam: Increased the amount of damage to 7(10). Lowered the base damage of the Wolf's Strike card to 3(4). Pet Peeve: Increased the amount of tile damage it does to 4(7). Lowered the amount of tile damage the Hush card's upgrade does from 8 to 7. Growl: It now transforms tiles into shields instead of swords. Graceful: Now spends all your Essence. Charged Fireball: increased upgraded base damage from 5 to 6. Booming Voice: Lowered the amount of damage it deals to 9(12). Fixed the improvise card so you won't be offered Improvise as a choice in the cards to add to your hand. Adaptable: Removed the level requirement. Prey: Changed its upgrade to give more Zeal (60%) instead of more Vulnerable. Taunt: Removed the level requirement, and increased the amount of Barbed it gives to 4(6). Jumpy: Lowered the amount of Barbed you gain to 3(5) to balance out the Taunt card. Counter Argument: Increased the base damage...
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• Announcements·6 Sept 2024Official

  Demon's Mirror is OUT!

  https://i.imgur.com/RndMMbV.png Hot diggity! Demon's Mirror is here!! We want to start by extending a huge thank-you to everyone enjoying the game so far. The last 24 hours have been a whirlwind for us over here, and things are just getting started. Here are a few bonus factoids to know as we march towards a global Demon's Mirror takeover. https://clan.akamai.steamstatic.com/images/4145017/a4b5497b835892fc443072d57fc2ad556dd83cd1.png Demon's Mirror is Steam Deck Verified Addicted to Demon's Mirror? Wanting to play on the go? Then you should snag the game on Valve's excellent Steam Deck platform! Wait. Hang on a second. This is quickly becoming an ad for the Steam Deck. We're happy to share that Demon's Mirror is now Steam Deck verified! So have no fear Steam Deck user, Demon's Mirror is going to run like a dream on your Steam Deck. https://i.kym-cdn.com/entries/icons/facebook/000/038/104/dmp.jpg Got a bug? Report it here! Let's face it, you may encounter a bug while playing Demon's Mirror. If that happens, it's important to know that everyone makes mistakes and everyone has those days. Everybody knows what I'm talking about. But we can't get beyond these mistakes unless we know about em! So we've set up a nice and neat bug reporting portal on the Steam forums, which you can access here! Help us squash them bugs! https://i.imgur.com/YvuhVc2.png Share your streams! We've had a delight watching our favorite deckbuilder/roguelike streamers play Demon's Mirror, and we hope you get in on the action too! If you end up playing Demon's Mirror on your Twitch/Youtube/Tiktok page, please share the link with us here in the comments or over on Twitter!* If you have a good enough time, we may reach out for some cool future opportunities! 👀 --- That's all for now, Demon's Mirror fans - hope you're enjoying launch as much as we are!! *We're not going to call it X.
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• Patch Notes·3 Sept 2024Official

  Demon's Mirror Launch Week! Demo Update, Monster Train Bundle, And More!

  Stare upon the Demon's Mirror, dear traveler. What do you see? Glory? Riches? A procedural path filled with monsters and magic? Any of those answers are valid really. Me personally? I see an awesome tile-manipulating deckbuilder coming right around the corner. Demon's Mirror is nearly here and we've got a few awesome bonuses to share as we approach the September 5th launch date! Demo Update https://i.imgur.com/QSh8AMn.png Get in the zone for Demon's Mirror by firing up the free demo and checking out the brand-new quality-of-life changes! This update is representative of the full, final version of Demon's Mirror with gameplay enhancements, bug fixes, multi-language localization, and more. Check out the full patch-notes at the end of this article, or skip over to the Demon's Mirror store page and grab the new and improved demo right now! **Do note, this update will clear any demo progress you may have made. If you're currently mid-run and don't want to start over, hold off on updating the demo! https://store.steampowered.com/app/1600910/Demons_Mirror/ Yogscast Tiny Teams https://i.imgur.com/JPZ4Jko.png We want to extend a quick shout-out to the Yogscast team for including Demon's Mirror as a part of their Tiny Teams event! It was a blast watching Zylus and Rythian play through the demo as they puzzled out card synergies and made it pretty darn far in the Demon's Mirror demo! We've included the VOD of their stream in our broadcast playlist playing on the Demon's Mirror store page throughout the launch window. Which is actually a great segue to: Are you a content creator who wants to check out Demon's Mirror? If so, you should head over to the Good Shepherd Lurkit page to request a code for the game! We review every content creator on a case-by-case basis, so all you have to do is fill out the form and if you qualify, you'll hear from us! Monster Train Bundle https://cdn.prod.website-files.com/60c12e8d8588991ab4ce682e/60e3b2dd53af4dc3dae23f10_Monster_Train_Key_Art_Witho...
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• Announcements·13 Aug 2024Official

  Demon's Mirror releases September 5th!

  Big news, Demon's Mirror fans. BIG NEWS. We have a release date! Demon's Mirror officially launches on September 5th, 2024 on PC! Right here on Steam! So many exclamation points!! To celebrate this monumental announcement, we have a brand new release date trailer for your viewing pleasure: Without any further ado... get hyped! Tell your friends that Demon's Mirror is right around the corner! Wishlist the game and play the free demo to get your strategy down! More exclamation points!!!!! We can't wait for you to get your hands on Demon's Mirror in just a few weeks. Until then, we're gonna put the finishing touches on this bad-boy. Cheers!
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