>>40559351
It's a great letter because of all the various possible interpretations that connect to Freemasonry.
Like geometry, gnosis, genesis, gravity, or generativity.

Interestingly, it connects Half-Life and Fallout through nuclear physics.
The letter G comes from the Greek letter gamma.

https://www.britannica.com/topic/G-letter
>The Greek alphabet from which, through Etruscan, the Latin was derived, represented the voiced velar stop by its third letter gamma (Γ).

Gamma radiation is the primary lethal hazard from nuclear fallout.

https://www.ncbi.nlm.nih.gov/books/NBK219147/
>For nuclear weapons, the primary early danger from local fallout is due to gamma radiation.