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Zero-K

Free and open-source real-time strategy game featuring physics-based combat, smart unit AI, large-scale multiplayer battles, and hundreds of unique units.

Alternative to: StarCraft and Age of Empires
RTS Game Open Source Strategy Spring Engine Multiplayer Gaming GPL-2.0
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About Zero-K

Zero-K is a free, open-source real-time strategy (RTS) game built on the Spring Engine. Designed around physics-based projectiles, intelligent unit behavior, and large-scale tactical warfare, it emphasizes strategic depth over micromanagement. Players can command hundreds of units across land, sea, and air while taking advantage of advanced pathfinding, dynamic terrain, automation tools, and a powerful customizable user interface. Zero-K supports competitive multiplayer, cooperative gameplay, AI skirmishes, and single-player missions, making it one of the most feature-rich open-source RTS games available.

Key Features

  • Large-scale real-time strategy gameplay
  • Physics-based projectiles and realistic combat
  • Smart unit AI with automation features
  • Hundreds of unique land, sea, and air units
  • Powerful customizable user interface
  • Competitive online multiplayer
  • Cooperative and AI skirmish modes
  • Single-player missions and campaigns
  • Built on the Spring RTS Engine
  • Cross-platform gameplay
  • Community-developed and regularly updated
  • GPL-2.0 licensed

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