About the 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.
Screenshots
16 imagesVersion Information
Steam Patch Notes
Official update history
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! 🎉
Current Release
Build 25206933
Uploaded Sep 12, 2026
System Requirements
How to Install
Smile Protocol.exe to play
Troubleshooting tips
• Run Redist/_CommonRedist installers if game won't start
• Add folder to Windows Defender exclusions
• Run as administrator
Download
Direct link available
Needed when extracting (WinRAR / 7-Zip) — not a site login.
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View AllDownload Smile Protocol for PC with a direct link or via torrent. Get the full version of Smile Protocol for free. Smile Protocol is a Action released by OxygenStudio.