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Idle Protocol is a minimalist sci-fi tower defense and incremental game. Manage a central CPU core, equip exactly 2 Nodes, and defend against geometric anomalies. Perform a System Reboot to earn Cycles and unlock permanent modules in the BIOS!
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
Tracked since Jul 7, 2026.
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Welcome to the Mainframe
Idle Protocol is a minimalist sci-fi tower defense / idle incremental game where tactical loadouts and economy management meet raw, exponential firepower. Set in a dark, neon-lit digital void, your goal is simple: manage a central CPU core and defend against an endless swarm of geometric anomalies.
Dual-Core Tactical Combat
Forget building complicated mazes. In Idle Protocol, you equip exactly 2 active Nodes (Towers) to face the swarm. Choose from 5 distinct weapons, including:
Kernel: A balanced central core that focuses on consistent damage and devastating critical strikes.
Surge: A high-fire rate node that unleashes devastating Chain Lightning.
Solaris: A heavy sniper that applies intense Thermal/Burn damage.
Trojan: A viral node that applies Damage over Time through Malware.
Cluster: An unstable containment unit focusing on Explosion/AoE damage.
Deep Meta-ProgressionHit an economic wall? Perform a System Reboot to prestige and earn Cycles. Spend your Cycles in the BIOS—a massive Hexagonal Grid Layout skill tree—to unlock game-changing Ultimate abilities like "Infinite Loop" or "Supernova". Defeating Bosses also grants Upgrade Points (Chips) for the Circuit tab to further optimize your build.
The True End Game: Quarantine Protocols
This isn't just an endless grind. Reach Wave 500 to unlock the true endgame: Quarantine Protocols. Initiate a run with up to 5 brutal modifiers—like the No-Click Protocol or Monocore restrictions—to prove your architectural mastery and unlock exclusive Alternate Skins for your nodes.
Minimalist Aesthetics: High contrast neon graphics with Bloom and subtle CRT/Scanlines effects.
Respects Your Time: Fast-paced fixed wave spawns and Offline Progress that grants 50% of normal earnings while the game is closed.
Dynamic Scaling: Watch your damage output skyrocket into the Trillions as projectiles dynamically grow in size and sound heavier based on their level.
Built-in Achievements: Track your progress with 50 unique milestones and an integrated Stats Tracking System.
Right now the cheapest offer for Idle Protocol is PLN 8.35 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
The lowest price KingsPrice has tracked for Idle Protocol is PLN 8.35 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
Create a free price alert on this page and KingsPrice will email you when Idle Protocol drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
