Kaleido is a blockchain game application platform with a core consensus mechanism based on a verifiable random algorithm - Algorand, which aims to achieve a higher degree of security, higher performance extensions of distributed applications and higher decentralization of blockchain underlying chain, thus providing a new technology solution for breaking through the "impossible triangle". Kaleido designed a purely distributed blockchain game architecture based on VRF, making full use of blockchain open account book, cryptography verification mechanism, P2P trusted network and other technologies to achieve a truly decentralized application development, endowing game fairness, transparency, and trustworthiness. At the same time, based on the Algorand Consensus mechanism that any node can freely enter and exit and permission contract mechanism designed for the game contract, the game complexity and experience can completely reach those of the current centralized server.