Connect Critical organs using veins in this mini metro inspired strategy game.

Run the game in fullscreen mode otherwise certain elements will not be visible.

You can play the game with just a mouse. 

  • Left Click on a vein to select its colour
  • Left Click and Drag to draw from node to node
  • Right Click to pause the game.

If you have a keyboard, you can use:

  • QWER / 1234 to select a vein
  • Esc / Space / p to pause the game

The game was developed over 8 days for the Jamoween 2020 Game Jam, which was organised by the Indie Game Squad. The theme of the jam was 'Death is not the end, it's only the beginning'.

PlatformsWindows, Linux, Android, HTML5
Release date Oct 24, 2020
Rated 4.0 out of 5 stars
(8 total ratings)
Made withUnity, Audacity, Adobe Illustrator
TagsAltgame, artgame, blood, Brain Training, Casual, flat-shading, Management, Minimalist, Relaxing, weird
Average sessionA few minutes
InputsKeyboard, Mouse, Touchscreen
AccessibilitySubtitles, High-contrast, Interactive tutorial, One button


Buy Now£1.00 GBP or more

In order to download this game you must purchase it at or above the minimum price of £1 GBP. You will get access to the following files:

Bloodlines Jamoween 2020 win 24 MB
Bloodlines Jamoween 2020 Lin 26 MB
Bloodlines.apk 23 MB

Development log


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Game is broken keep removing my vein's!! 

You can only have one vein of a colour at any time. Redrawing a vein which has already been drawn, will remove the old vein. Hope this helps :)  

How do I move a vein around?

You join nodes together with the veins.

You must connect at least 3 nodes in a ring to complete the vein

Click and Drag on a node to start the vein.


Thank you