Can you acquire Realm Gold (Realm Of The Mad God in-game credit) without spending real money?
Solution 1:
As of 2018, the Discord Server has been running contests about twice a month that can reward up to 2500 Gold.
These contests are generally creative-based contests, such as creating new items, creating item sets based on already existing items, writing songs, or creating dungeon concepts. You'll be able to see them all in the #server-events channel, and instructions for how to enter are there.