Screenshots
Watch trailer on Steam ↗Twenty One
Neptune Corporation · Published by Neptune Corporation
9 user reviews — 100% positive (9 reviews) · 25 achievements
Last updated 28 Sept 2026
You wake up in a velvet-draped casino that seems suspended in a void, run by faceless dealers and watched by an unseen Host. You're told you owe a "debt of existence" and must earn your right to live another day by beating the Quota. You have 5 rounds to meet the quota, or… you're out. Permanently.
Indie, Free To Play · 2026 · More free games
About this game
You wake up in a velvet-draped casino that seems suspended in a void, run by faceless dealers and watched by an unseen Host. You're told you owe a "debt of existence" and must earn your right to live another day by beating the Quota — a cash target that rises with each round. You have 5 rounds to meet or exceed the quota, or… you're out. Permanently.
💵 Core Gameplay:
You start with $50.
You must reach a quota of $150 in 5 rounds. The quota increases after each successful completion.
Each round, you are matched with an NPC to play "21", a dark variant of Blackjack.
♠️ Trump Cards:
Every player gets access to Trump Cards — single-use twists that bend or break the rules of 21. Trump Cards can be bought, earned through riskier plays, or awarded after surviving intense matches.
🕒 The Clock Is Ticking:
Each round has a real-time limit, forcing you to make decisions under pressure. As the game progresses:
The time shortens.
Opponents grow more unpredictable or monstrous.
Visuals distort — cards bleed, tables stretch, opponents twitch unnaturally.
Fail to meet the quota in time? You’re pulled into “The Pit”, a final death-match round where the odds are heavily stacked, but survival might buy you another cycle.
System Requirements
Will my PC run this? →Minimum
- Requires a 64-bit processor and operating system
- OS: Any Windows Version
- Processor: Intel Core i5-2300
- Memory: 4 GB RAM
- Graphics: AMD Ryzen 3 1200, 3.10 GHz
- Storage: 800 MB available space
Recommended
- Requires a 64-bit processor and operating system
Supported Languages
*languages with full audio support
Latest news
AnnouncementsOfficial
Twenty One — Devlog v1.0 (Full Release)
It’s ready.Or at least— this version of it is.v1.0 — Full ReleaseTwenty One has officially reached Version 1.0.What started as a simple table… is now something much larger.Stories System IntroducedThe campaign structure has been expanded into a new system:StoriesStories act as self-contained narrative arcs, each with their own:MechanicsProgressionPerspectiveAt launch, two Stories are available:Story 1 — ScottA descent.5 ChaptersNew mechanic: HallucinationsNew minigame: Signal GuessIncreasing instability across gameplay and perceptionThis story follows Scott as he attempts to understand what’s happening— and fails.Story 2 — Adrian (Player 412)An observation.Campaign currently in development structure, now integrated into StoriesFocuses on environmental inconsistencies rather than internal instabilityAdrian is not losing control.Something else is.Future StoriesMore Stories will be added later.Not all of them will follow the same rules.New Story Archives (Adrian Arc Begins)Scott’s story has concluded.Adrian’s has begun.Three new archives are now available:Audio Archive — Pre-Admission CallDocument Archive — Medical Intake Form #412Image Archive — Room 12-BThese archives introduce Adrian prior to and during his condition.Note on ArchivesThe previously planned video archive system has been removed.Not everything needs to be seen.New Song Pack — “Off Hours”A new set of tracks has been added, separate from story content.5 ambient tracksMinimal, late-night toneSubtle irregularities in audio designNew TablesThree new playable tables have been added:Breakroom Table (Coins)Glass Surface (Premium)Workshop Table (Premium)Each introduces subtle environmental changes during play.Premium Currency ExpansionPremium currency (Marks) is now fully integrated.Can be obtained through:Coin offeringChaos interactionsUnusual gameplay conditionsUsed for:CosmeticsArchivesSpecial allowancesGameplay AdditionsHallucination system (Story-based)Signal Guess minigameExpanded modifier interactionsCon...Read full article on Community Announcements (Creatune)Community & EventsOfficial
👑 EVENT — VIP ENCOUNTERS
Not all players are the same.During this event, VIP opponents will appear more frequently.These high-profile players bring higher stakes—and higher rewards.Event Effects:👑 Increased VIP encounter rate💰 x2.5 reward multiplier when facing VIPs⚠️ Smarter, more unpredictable opponentsEvent Duration: April 18 – April 21They chose to be here.Did you?Step up to the table.♠️Read full article on Community Announcements (Creatune)Community & EventsOfficial
🎨 EVENT — FAN WORK COMPETITION (APRIL 8)
You’ve seen the table.Now show us what you see.We’re hosting our first Fan Work Competition for Twenty One. Create something inspired by the game, and it might be featured inside the Fan Work page.What you can submit:Artwork (digital or traditional)Music / remixesShort videos or editsWriting (stories, lore, concepts)Anything creative inspired by Twenty OneRules:Must be your original workKeep it appropriateStay within the theme of Twenty OneHow to enter: Post your work and tag it with: #TwentyOneFanWorkReward: Selected entries will be featured in-game on the Fan Work page.Your work… preserved in the system.Event Date: April 10Duration: 24 hoursThe table isn’t the only thing being watched.We’ll be looking.Good luck. ♠️Read full article on Community Announcements (Creatune)Community & EventsOfficial
☎️ EVENT — PHONE LINE DISTURBANCE
We are currently experiencing… interference.During this event, phone calls will occur more frequently.Not all of them are from the Host.Some may:change your cashalter your quotamultiply your earningsor do nothing at allSome may just… speak.Event Effects:☎️ Increased phone call frequency⚠️ New temporary call variations🃏 Unpredictable outcomesEvent Duration: April 12 – April 15If your phone rings…answer it.Or don’t.It won’t stop the call.♠️Read full article on Community Announcements (Creatune)Patch NotesOfficial
Twenty One — Devlog v0.11 (Major Update)
Something has changed.Not all at once. Not in a way you can immediately point to. But if you sit at the table long enough… you’ll notice.New Opponents Have Joined the TableThree new AI players have entered rotation. They play differently. They behave differently. And more importantly—they wait differently.You may not notice it at first. But they’re not just playing to win.New Minigame: CHAOSSometimes the rules don’t bend.They break.Chaos Mode introduces unpredictable, shifting conditions mid-game. Expect:Sudden rule changesUnstable turn flowEffects that don’t fully explain themselvesIf you were comfortable before—you won’t be now.New Feature: ModifiersThe table is no longer neutral.Modifiers are now active conditions that alter gameplay. This update introduces 9 modifiers, each capable of changing how a match unfolds.Some are helpful. Some are not.Some… don’t seem to belong at all.Unlockable BIOSYou asked who you were playing against.Now you can find out.A new bios system has been added. To access it, enter the following on the main menu:4 → 1 → 2We won’t tell you what you’ll find. Only that not all entries were meant to be read.Visual OverhaulThe table is no longer still.Dynamic camera zooms now react to gameplayAll matches now take place over a wooden floorA ceiling fan slowly rotates above youStay in a match too long, and things begin to change:The fan starts to… decaySomething appears where it shouldn’tThe screen may begin to tint redThis is normal.Probably.Main Menu ChangesThe main menu has been updated to reflect Chaos Mode.It’s subtle.But it’s there.Content Warning & Health NoticeA content warning and health/safety notice have been added.We recommend reading it.We know you probably won’t.Campaign UpdateThe campaign is not included in this version.However—development has officially begun.Player 412’s story is coming.Steam AchievementsStill being worked on.Still not ready.Still watching.Final Notesv0.11 is less about what’s added… and more about what’s starting...Read full article on Community Announcements (Creatune)
