This awesome unique pixel project was free for anyone who interacted with their posts or giveaways on twitter/discord. You can learn more about their minting process and the project here: https://medium.com/@NinjaSolProto/introducing-ninja-pixels-4931d6a9695a
“The $NINJA Principle Ninja Protocol is a community bootstrapped NFT and gaming ecosystem project that took zero VC funding, and as a result community is everything to us. Ninja Protocol is a protocol for the people and one of our founding principles is to always bring value for our community and to $NINJA holders. NINJA-PIXELS is but one of many value drops we will be giving to our community going forward.”
Marketplace: https://market.ninjaprotocol.io/#/collection/ninja-pixel
Twitter: https://twitter.com/ninjaprotocol