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Watch trailer on Steam ↗Oleander-X
Jason Nguyen · Published by Jason Nguyen · Official site ↗
Last updated 28 Sept 2026
Oleander-X is a stealth action game about classified missions, buried evidence, and a cure that should never have existed. Infiltrate guarded facilities, gather proof, plant explosives, and escape before the truth turns against you.
£6.29
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Price history
Action, Adventure, Indie · 2026 · More £5 - £15 games
About this game
Oleander-X is a stealth action game about infiltration, evidence, sabotage, and the cost of obedience.
You play as Ethan, a special agent assigned to investigate a biotech-linked criminal network operating behind guarded facilities and classified research sites. Each mission begins with a simple order: get in, collect evidence, plant the explosive charge, and escape before the operation collapses.
But the deeper Ethan goes, the less simple the mission becomes.
Every facility tells part of the story. Locked terminals hide patient records. Security rooms protect classified experiments. Storage wings conceal supply routes, corrupted data, and evidence that someone powerful has tried to erase. What begins as a series of covert assignments slowly becomes a trail of disturbing discoveries — one that forces Ethan to question not only the enemy, but also the system sending him in.
Move through shadowed corridors, study patrol routes, avoid vision cones, disable security systems, and decide when to stay hidden or strike. Some missions reward patience and careful observation. Others punish hesitation. A clean escape is always possible — but never guaranteed.
As the investigation escalates, the enemy adapts. Stronger guards appear. Security becomes tighter. Official equipment starts to feel inadequate. Between missions, Ethan is pushed toward dangerous alternatives: black-market weapons, hidden deals, copied evidence, and choices that may help him survive — at a cost.
Oleander-X is not only about completing objectives. It is about what those objectives do to the person carrying them out. Every successful mission brings Ethan closer to the truth, but also closer to the edge of who he used to be. The line between duty and survival begins to blur. The line between justice and compromise becomes harder to see.
When orders are no longer enough, Ethan must decide what he is truly fighting for.
And as the truth behind Oleander-X begins to surface, one question remains:
How much of himself is he willing to lose to complete the mission?
Infiltrate Guarded Facilities
Enter restricted zones, avoid patrols, and move carefully through hostile environments. Each mission challenges you to observe the layout, understand enemy movement, and find the safest route through the facility.
Stay hidden, wait for the right moment, or take the risk and move under pressure.
Collect Evidence. Plant the Charge. Escape.
Every operation has three core objectives:
Collect critical evidence
Plant the explosive charge
Reach the exit before it is too late
Getting in is only half the mission. Once the charge is armed, the escape becomes a race against time.
Stealth Is a Choice
Avoid vision cones, security cameras, patrol routes, and stronger enemy types. Some situations can be solved without violence. Others may force you to decide whether staying hidden is still worth the risk.
Patience can keep Ethan alive.
Hesitation can get him killed.
Equipment Comes at a Cost
Official equipment may not always be enough.
As missions become more dangerous, black-market weapons and hidden deals become available. These tools can make survival easier — but every shortcut leaves a mark.
What you buy, what you use, and what you choose to ignore can shape Ethan’s path.
A Story of Duty, Survival, and Moral Collapse
Oleander-X follows Ethan as his mission becomes more personal, more dangerous, and harder to justify.
The deeper he goes, the more he discovers that the truth is not hidden behind one locked door. It is buried across files, bodies, experiments, debts, and choices.
Complete the mission.
Expose the truth.
Survive the consequences.
System Requirements
Will my PC run this? →Minimum
- Requires a 64-bit processor and operating system
- OS: Windows 10 64-bit
- Processor: Intel Core i3-4130 / AMD FX-4300 or equivalent
- Memory: 4 GB RAM
- Graphics: Intel HD Graphics 4000 or dedicated GPU with OpenGL 3.3 / Direct3D 11 support
- DirectX: Version 11
- Storage: 500 MB available space
Recommended
- Requires a 64-bit processor and operating system
- OS: Windows 10 64-bit
- Processor: Intel Core i5-6500 / AMD Ryzen 3 1200 or better
- Memory: 8 GB RAM
- Graphics: Intel UHD Graphics 620 / NVIDIA GTX 750 / AMD Radeon R7 250 or better
- DirectX: Version 11
- Storage: 1 GB available space
Supported Languages
*languages with full audio support
Latest news
Patch NotesOfficial
Oleander-X-v1.5.4-win: Support Simplified Chinese, German, Spanish and Portugues
The Windows version now supports 4 new languages: Support Simplified Chinese, German, Spanish and Portugues.Due to limited resource, we are working on release new version for MacOS as soon as possible. Mac version still does not support Steam Leaderboard and only supports English.Read full article on Community Announcements (jasonnguyenvn)Patch NotesOfficial
Oleander-X-v1.5.2-win: Connect Steam Leaderboard
This update only for Windows version.Changes:Connect to Steam Leaderboards for Stage Select gamesNew AssetsNotes: New version with same changes for MacOS will be released soon.Leaderboards for Story game will be available soon.FREE Demo versions will be also released soon. However, they won't connect to Steam Leaderboards, only have local leaderboards.Read full article on Community Announcements (jasonnguyenvn)Patch NotesOfficial
Oleander-X 1.5.1: Improve Fighting mode
Changes: Improved combats in Fighting ModeImproved the visual of Guards' HP BarAdded Guard's number of bullets left bellow the HP BarIn Fighting Mode: If a Guard is out of bullets, he will run away if Ethan is chasing himRead full article on Community Announcements (jasonnguyenvn)AnnouncementsOfficial
Oleander-X 1.5.0: New Ways to Fight in Oleander-X
New gameplay: Stage SelectSome players told us that the current Story Mode can be quite hard to complete all the way through. We recently introduced Fighting Mode for Story Mode to give players a more action-focused way to play, but we wanted combat to feel even more fun, flexible, and replayable.So in this update, we are introducing New Game (Stage Select). Stage Select lets you jump straight into a standalone randomized mission. You can choose a lab map, pick a game mode, and select the weapon you like. Weapon choices are limited based on the selected lab, so earlier labs stay balanced while later labs give you more firepower options.This mode is separate from Story Mode. It does not affect story progress, save data, money, EXP, inventory, route flags, or mission progress. It is made for quick runs, combat practice, score chasing, and replaying Oleander-X in a more flexible way.Stage Select also now includes leaderboards. For now, these are personal/local leaderboards, with data stored through Steam Cloud. We are also working on support for official Steam leaderboards in a future update.Multiple Player is coming!We have also added a Multiple Player option to the Stage Select menu. Multiplayer is not available yet, but it is now officially in development. Our current plan is to release Stage Select multiplayer around late 2026 or Q1 2027. Improvement: Now you can see how many shoots to take down a guardCombat should also feel clearer now: guards now display an HP bar, so players can see how many more shots are needed to take them down. This apply for both Story games and Stage Select games in all game mode (Classic/Fighting). Free DEMO version still has full features as the full version including Stage SelectThe FREE Demo version also includes the full Stage Select feature, with Lab 01 to Lab 04 available for free. Release NotesAdded New Game (Stage Select).Renamed the original new game option to New Game (Story Mode).Added standalone randomized missions with no St...Read full article on Community Announcements (jasonnguyenvn)AnnouncementsOfficial
Oleander-X 1.4.0: Fighting Mode — A New Way to Infiltrate
With Fighting Mode, infiltrations are no longer only about avoiding detection. Guards can now fight back with firearms, forcing you into tense gunfights where movement, timing, and cover matter.Bullets are visible and dodgeable — a shot only counts if it actually hits Ethan. Move fast, escape the danger zone, and survive the firefight.Players can still choose Classic (Simple) for the original stealth-focused experience, or switch to Fighting for a more intense action-stealth challenge.Important NoteTo experience Fighting Mode, you need to start a New Game or Switch the current Saved Game to new Mode.Switch Current Saved GameDuring gameplay, press Esc to open the Pause Menu, then select Convert Game Mode.Follow the dialogs to confirm you would like to switch the Game Mode.You can switch between Classic Mode & Fighting Mode at any time. However, you also may want to backup the data before. For backup feature, follow the instruction below.Start A new gameBefore creating a new game, please back up your current save data if you want to continue from your existing progress later.To create a backup:During gameplay, press Esc to open the Pause Menu, then select Save Backup.To restore your backup later:From the Main Menu, select Load Backup Or,During gameplay, press Esc to open the Pause Menu, then select Load Backup.Patch Notes: 1.4.0AddedAdded Fighting Mode.Added Classic (Simple) and Fighting selection when starting a New Game.Added persistent save support for selected game mode.Added armed guard behavior in Fighting Mode.Added visible guard bullets/projectiles.Added guard shooting effects.Added guard gunshot sounds based on guard level.Added Ethan’s visible aiming cone in Fighting Mode.Added dodgeable projectile logic.ChangedGuard vision cones are hidden in Fighting Mode, but still work internally for detection and alert.Ethan’s shooting in Fighting Mode now uses a forward-facing aiming cone.Guards stop before firing in Fighting Mode.Guards fire immediately after detectin...Read full article on Community Announcements (jasonnguyenvn)
