In the demo, we present NFT SMASH-a game to test your NFT rarity sense. A rarity meter aims to be an immanent value estimator for NFTs: the rarer the NFT, the more expensive it is now compared to other NFTs within the same collection. While working with rarity meters, we designed and developed a game to examine how intuitive are their results. The BAYC collection data mining, rarity computation with the Kramer algorithm, and a web game application are essential parts of the demo design. The game is a five-round binary choice of picture followed by the game run summary.

In the demo, we present Kramer– an online rarity meter for the Karnaia NFT collection. Meter takes NFTs’ traits, sets, and editions and fits their combination for trading data. Kramer provides the score and the rank of the desired bird and full statistics of all birds.