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The Three Kingdoms Using Chainlink VRF for Fair Randomization in NFT Claiming and Upgrades

We’re excited to announce that The Three Kingdoms (TTK) — a third-generation strategy war game that follows the romance of the three kingdoms — has integrated Chainlink Verifiable Random Function (VRF) on Binance smart chain mainnet. By integrating the industry-leading decentralized oracle network, we now have access to a tamper-proof and auditable source of randomness needed to securely randomize the claiming and upgrading process for NFT heroes. Ultimately this creates a more exciting, transparent, and fraud-proof user experience, as users can enjoy fair gameplay knowing all NFT heros regardless of rarity are randomly generated.

The ​​Three Kingdoms is a highly strategic third-generation NFT game based on the historical characters of the Three Kingdoms period in ancient China. Holders of historical character NFTs can enjoy an engaging gameplay experience while earning rewards for their achievements.

With the introduction of second-generation NFT games, users had limited options to earn NFTs in-game. The Three Kingdoms goes beyond that paradigm by featuring multiple methods of earning NFTs and tokens. In the Three Kingdoms game, players can collect NFT characters, complete quests, and join sieges for NFT and token rewards. The Three Kingdoms will be a pioneer in third-generation blockchain gaming, incorporating the idea of battling and sieging cities with user-based staking.

In order to establish verifiable fairness and transparency around randomizing NFT claim rewards and upgrades, we needed access to a secure random number generator (RNG) that any user could independently audit. However, RNG solutions for smart contracts require several security considerations to prevent manipulation and ensure system integrity. For instance, RNG solutions derived from blockchain data like block hashes can be exploited by miners/validators, while off-chain RNG solutions derived from off-chain APIs are opaque and don’t provide users with definitive proof a...

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