Realms of Ether is an online game, launched on the Ethereum blockchain in December 2017. The game allowed players to mint fortresses, upgrade their fortresses with troop buildings, dragons, gold mines, and more. Players could engage in combat with others, and had the option to sell their fortresses for ETH in the in-game auction house. The game was abandoned after launch in 2017, and was rediscovered in August 2021.

Since the rediscovery, a community formed around the original vision of the game. The community built a revival website at https://www.realmsofether.com, established a Decentralized Autonomous Organization (DAO), has monthly recurring revenue, a current treasury balance of ~$125k, and intends to become the center of historical significance.