Skip to content
Home Horror Blood: One Unit Whole Blood v1.21 hotfix

Blood: One Unit Whole Blood

Updated v1.21 hotfix
Version updated to v1.21 hotfix

Updated June 10, 2026 1:02 am (2 weeks ago)

Blood: One Unit Whole Blood is a collection of the classic first-person shooter and its expansions. Fight through a grim world overrun by cultists, zombies, and grotesque creatures, using an arsenal of over-the-top weapons. The intense combat and dark atmosphere made it a landmark PC shooter.

FPPHorrorPixel GraphicsShooter
About this game

Blood: One Unit Whole Blood overview

You carved your soul to shreds in servitude to a dark god, but false promises and betrayal were your only reward. Now you have a score to settle and it will be measured in blood! Experience the madness in one carnage-soaked package! All the gore, all the unholy war! Zombies, gargoyles, hellhounds and blood-crazed hordes of horrors await! Crush loathsome evil of the mighty Tchernobog! Or condemn yourself to eternal damnation in this leviathan of unhallowed gaming action!

  • Includes the original Blood and addons: Plasma Pak and Cryptic Passage
  • Various, often crazy weapon types like a pitchfork, flare gun or a Voodoo doll
  • A grim atmosphere with an abundance of graphical violence, offset by dark humor and cheesy one-liners
System Requirements

Will this game run on your PC?

Minimum

  • Windows XP or Windows Vista
  • 1 GHz Processor (1.4 GHz recommended)
  • 256MB RAM (512 recommended)
  • 3D graphics card compatible with DirectX 7 (compatible with DirectX 9 recommended)
  • Mouse
  • Keyboard.
Instructions

Download, Install, and Play

  1. Click the download button to get the link. You’ll be redirected to our link generator.
  2. Once you’re there, you can either copy the link or open it directly.
  3. Download Blood: One Unit Whole Blood v1.21 hotfix [latest]. Wait until it is 100% complete, then locate the files.
  4. Install the game:
    • Run or double-click setup_********.exe.
    • If a DLC folder is included, run any .exe files inside it as well.
  5. After the installation is complete, launch the game and start playing.
  6. Enjoyed the game? Consider purchasing it from the official store to support the developers.

Need help?
Check our FAQs for common questions and fixes. If you need additional assistance, you can also visit the official GOG Support Center.