Screenshots
Watch trailer on Steam ↗Smile Protocol
OxygenStudio · Published by OxygenStudio
Content notice: This game contains combat-focused gameplay with firearms and enemy encounters. Players can engage in shooting mechanics, and enemies may react with blood effects when hit. The violence is presented in a gameplay-focused, system-driven context without dismemberment, torture, or extreme gore. There is no sexual content, drug use, or self-harm themes.
Positive — 87% positive (23 reviews) · 25 achievements
Last updated 28 Sept 2026
Survive intense combat, earn rewards, open cases, unlock rare skins, and customize your arsenal in this high-pressure survival FPS where every run matters.
£5.29
Lowest price we've ever recorded
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Price history
Action, Indie, Simulation, Early Access, Casual · 2026 · More £5 - £15 games
About this game
🎭 SMILE PROTOCOL
Smile Protocol is a high-pressure survival FPS where every run rewards your progress.
Fight through dangerous encounters, earn coins and keys, buy equipment, open cases, expand your collection, and build your own way to survive.
The longer you survive, the greater the rewards.
📦 CASE SYSTEM
Earn keys and open cases filled with valuable rewards.
Unlock weapon skins, attachments, gloves, grenade skins, and collectible items to expand your inventory.
Every case is a chance to discover something new.
🎒 INVENTORY & COLLECTION
Build your own collection and customize your equipment.
Unlock and equip:
• Weapon Skins
• Weapon Attachments
• Gloves
• Grenade Skins
• Cosmetic Items
Create a loadout that feels unique to you.
Every unlocked item is permanently added to your collection.
📖 STORY MODE
Push deeper into the facility by unlocking new sectors and surviving the threats waiting behind every door.
Explore dangerous areas, manage your resources, and fight your way forward.
⚔️ WAVE MODE
Survive a fixed number of increasingly difficult waves.
Each completed wave rewards you with keys and resources.
The further you go, the greater the reward.
🔥 ENDLESS HOSTAGE MODE
Activate the hostage event and defend your position.
Enemies grow stronger and more numerous over time.
The longer you survive, the bigger the reward.
Stay longer for greater rewards or extract at any time and secure your earnings before the pressure becomes overwhelming.
There is no final wave.
Only survival.
💰 TRADER SYSTEM
Every match rewards you with coins.
Visit the Trader and convert your coins into keys to open even more cases and grow your collection faster.
Play. Earn. Trade. Unlock.
🛒 SHOP SYSTEM
Spend your earned coins to prepare for the next run.
Purchase:
• Weapons
• Ammunition
• Armor
• Health Supplies
• Grenades
• Equipment
Choose your loadout carefully before entering the facility.
The right equipment can mean the difference between survival and death.
👽 CHOOSE YOUR ENEMY TYPE
Customize who you fight before every run.
Face different enemy types including:
• Humanoids
• Aliens
• Skeletons
Each run can feel different depending on the enemies you choose.
🎁 TIMED REWARDS
Claim free rewards simply by playing.
Collect additional coins and keys over time to help expand your collection and open more cases.
Keep playing and come back regularly to maximize your rewards.
⚙️ CUSTOM RULES & REWARD MULTIPLIER
Create your own challenge.
Customize:
• Manual or Automatic Reload
• Enemy Count
• Enemy Speed
• Enemy Type
• Headshot Only Mode
Harder settings increase your Reward Multiplier, allowing you to earn more coins and keys.
The greater the risk, the greater the reward.
💀 HOW FAR CAN YOU SURVIVE?
Fight.
Survive.
Earn rewards.
Buy equipment.
Open cases.
Grow your collection.
Return stronger.
Every run matters.
System Requirements
Will my PC run this? →Minimum
- Requires a 64-bit processor and operating system
- OS: Windows 10
- Processor: Intel Core i7
- Memory: 8 GB RAM
- Graphics: GTX 1660
- DirectX: Version 11
- Storage: 8 GB available space
Recommended
- Requires a 64-bit processor and operating system
- OS: Windows 11
- Processor: AMD Ryzen 9
- Graphics: RTX 3060
- DirectX: Version 12
- Storage: 15 GB available space
Supported Languages
Latest news
Patch NotesOfficial
Smile Protocol - v1.0.1 Update and Improvements! 🔧
Greetings to everyone! 👋 Thank you very much for your interest in Smile Protocol and the feedback you shared! 🚀 We have been following your comments closely since the game's release. We released the v1.0.1 update to fix the issues detected in the first 24 hours and improve the gaming experience. ⚙️ 🔧 Changes with this update: 🌊 Wave Mode • The laptop interaction issue during logout has been fixed. • The waiting time required for exit has been reduced from 5 seconds to 3 seconds. 📖 Story Mode • Collider problems on environmental objects have been fixed and character controls have been improved. 🗺️ Hostage Mode • Some incorrect objects and settlement points on the map have been corrected. 🎁 Opening the Case • You can now skip the safe opening animation with the “Skip” option and access your rewards instantly. ⚙️ General • Game stability has been improved and various minor bugs have been fixed. 💬 Your Feedback Your feedback is invaluable for us to continue improving Smile Protocol. Continue to share your problems and thoughts with us in the Community Center and our Discord server! 💬 Thank you again for your support! Have fun! 🎉Read full article on Community Announcements (oxygendeveloper20)AnnouncementsOfficial
Smile Protocol – First Look
Smile Protocol is now available in Early Access!Join us for a first look at the game and discover its gameplay, atmosphere, and world.This broadcast features pre-recorded gameplay footage.If you like what you see, check out Smile Protocol and add it to your Steam library. ❤️Read full article on Community Announcements (oxygendeveloper20)
