XCOM: Enemy Unknown

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Updated July 15, 2026 4:19 pm

About This Game

Quick Overview
XCOM: Enemy Unknown is a turn-based tactical strategy game where you lead Earth’s defense against an alien invasion. You manage the XCOM base, research alien technology, build facilities, launch interceptors, and send small squads into dangerous missions where every move can decide who survives.

What makes it special is the pressure. Your soldiers are not disposable units — they gain ranks, earn abilities, and can die permanently. One missed shot, one bad flank, or one risky dash can ruin a mission. That mix of squad tactics, base management, panic control, and permanent consequences is what made Enemy Unknown the foundation for modern XCOM.

Who Should Play This Game?
Play XCOM: Enemy Unknown if you enjoy tactical combat, turn-based strategy, squad upgrades, base building, and tense decision-making. It is a great starting point if you want to understand the modern XCOM formula before moving to XCOM 2 or War of the Chosen.

This is not for players who want fast shooting or real-time action. Enemy Unknown is about patience, cover, positioning, overwatch, research choices, and accepting that sometimes your best soldier will miss a 90% shot. If you like games where victory feels earned and mistakes create memorable stories, this is still worth playing.

Performance on PC
XCOM: Enemy Unknown is very easy to run on modern PCs. Steam lists Windows Vista, a 2 GHz dual-core CPU, 2 GB RAM, NVIDIA GeForce 8600 GT / ATI Radeon HD 2600 XT, DirectX 9, and 20 GB storage as minimum requirements. Recommended specs are still light, with Windows 7, 4 GB RAM, and GeForce 9000 series / Radeon HD 3000 series graphics.

Most laptops and older desktops should handle it well. Since it is turn-based, ultra-high FPS is not important, but smoother performance helps with camera movement, explosions, alien turns, and longer sessions. Modern systems should have no issue running it, especially compared to the heavier XCOM 2 games.

Screenshots

System Requirements

Minimum


  • OS *:Windows Vista
  • Processor:2 GHz Dual Core
  • Memory:2 GB RAM
  • Graphics:NVIDIA GeForce 8600 GT / ATI Radeon HD 2600 XT or greater
  • DirectX®:9.0
  • Hard Drive:20 GB HD space
  • Sound:DirectX Compatible
  • Other Requirements:Broadband Internet connection
  • Additional:Initial installation requires one-time internet connection for Steam authentication; software installations required (included with the game) include Steam Client, Visual C++ 2008 Redistributable, DirectX and Microsoft .NET 4.

Recommended


  • OS *:Windows 7
  • Processor:2 GHz Dual Core (Intel Core 2 Duo 2.4 GHz or Athlon X2 2.7 GHz)
  • Memory:4 GB RAM
  • Graphics:NVIDIA GeForce 9000 series / ATI Radeon HD 3000 series or greater
  • DirectX®:9.0
  • Hard Drive:20 GB HD space
  • Sound:DirectX Compatible
  • Other Requirements:Broadband Internet connection
  • Additional:Initial installation requires one-time internet connection for Steam authentication; software installations required (included with the game) include Steam Client, Visual C++ 2008 Redistributable, DirectX and Microsoft .NET 4.

Minimum


  • OS: 10.8.5 (Mountain Lion)
  • Processor: 2.0 GHz Intel Core 2 Duo (Dual-Core)
  • Memory: 4 GB RAM
  • Hard Disk Space: 20 GB
  • Video Memory: 256 MB
  • Video Card: AMD HD4000 / NVIDIA 9000 Series (See NOTICE for details)
  • Additional: Broadband Internet Connection.
  • NOTICE:The following graphics cards are not supported: ATI X1xxx series, ATI HD2xxx series, Intel GMA series, NVIDIA 7xxx series, NVIDIA 8xxx series. The following cards require you to have 8GB of system RAM: NVIDIA 320M, NVIDIA 9400 and Intel HD3000.

Recommended


  • OS: 10.9.1 (Mavericks)
  • Processor: 2.4 GHz Intel Core 2 Duo (Dual-Core)
  • Memory: 8 GB RAM
  • Hard Disk Space: 20 GB
  • Video Memory: 1GB
  • Additional: Broadband Internet Connection.
  • NOTICE:The following graphics cards are not supported: ATI X1xxx series, ATI HD2xxx series, Intel GMA series, NVIDIA 7xxx series, NVIDIA 8xxx series. The following cards require you to have 8GB of system RAM: NVIDIA 320M, NVIDIA 9400 and Intel HD3000.

Minimum


  • OS: Ubuntu 14.04 (64 bit required)
  • Processor: 2GHz
  • Memory: 4GB Memory
  • Graphics: 512MB*
  • Hard Drive:16GB HD space
  • Other Requirements: Nvidia 600 series+, AMD 6000 series+, Intel Iris Pro.
  • IMPORTANT: Requires 64bit OS to play.

Recommended


  • OS: Ubuntu 14.04 (64 bit required)
  • Processor: 3 GHz
  • Memory: 8GB Memory
  • Graphics: 1GB*
  • Hard Drive: 16GB HD space
  • Other Requirements: Nvidia 700 series+, AMD 6000 series+
  • IMPORTANT: Requires 64bit OS to play.