Hell Gem Annihilation
From Official Sixty Four Wiki
Hell Gem Annihilation is a Game Mechanic in Sixty Four.
When 64 
Hell Gem are in contact of 
Celestial Foam, they're annihilated.
Related Machines[edit | edit source]
Additionnal Information[edit | edit source]
Hollow Rock Research Site makes Celestial Foam annihilate with 512 Hell Gem instead of 64.
Annihilator produces one 
Void per Hell Gem Annihilation.
Hell Vault protects 1024 Hell Gem from Hell Gem Annihilation.
Void Resonator crushing blocks around it on every Hell Gem Annihilation tick.
This mechanics is also called BGC.