CryptoKitties - Breed and collect adorable creatures using Ethereum
Gather Town - Spatial video-chat worlds for work and play
Mars Genesis - 10,000 unique parcels of Mars stored on the blockchain
SpatialChat - Virtual space platform to help remote teams collaborate.
Crypto Corgis - Crypto corgis live (and die) on the blockchain
Teamflow - Feel like a team again with your own virtual office