Necrocorns are a unique resource.
- When Markers are built, they start a ticking corruption countdown that slowly changes alicorns into necrocorns.
- The corruption timer is very slow — every tick you have more than zero alicorns, each marker will add 0.000001 to the corruption counter, which has to reach 1 for a necrocorn to be produced.
- If you have more than zero necrocorns, then corruption speed will be penalized and lowered to one quarter.
- This penalty may be counteracted by building Unicorn Necropolis, which speeds up the penalized production by 10% each.
- Each Black Radiance increases corruption rate by 1.2% of the square root of your BLS.
- Necrocorns can be fed to Leviathans (via the "Feed Elders" button) to make them stay longer in the future.
- Necrocorns count as luxury resources, and therefore grant a +10% to happiness if you have more than 0.
- Necrocorns are used to build Unicorn Graveyard and Unicorn Necropolis.