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CyberKongz Integrates Chainlink VRF to Randomize In Game Features on Polygon

Mar 6, 2022
Chainlink Partnership
Chainlink Partnership
CyberKongz is excited to announce that we have integrated Chainlink Verifiable Random Function (VRF) on Polygon Mainnet in order to randomize in-game features in our upcoming adventure game “Play & Kollect”.
By integrating the industry-leading decentralized oracle network, we now have access to a tamper-proof and auditable source of randomness needed to support randomized in-game features in our upcoming adventure game. We will also be integrating Chainlink Price Feeds on Ethereum, enabling us to display accurate NFT prices on the CyberKongz website.
In order to randomize in-game features in our adventure game “Play & Kollect”, we need 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 about the integrity of the process.
We selected Chainlink VRF because it’s based on cutting-edge academic research, supported by a time-tested oracle network, and secured through the generation and on-chain verification of cryptographic proofs that prove the integrity of each random number supplied to smart contracts.
Chainlink VRF works by combining block data that is still unknown when the request is made with the oracle node’s pre-committed private key to generate both a random number and a cryptographic proof. The CyberKongz smart contract will only accept the random number input if it has a valid cryptographic proof, and the cryptographic proof can only be generated if the VRF process is tamper-proof.
This provides our users with automated and verifiable assurances directly on-chain that the CyberKongz game is provably fair and was not tampered with by the oracle, outside entities, or the CyberKongz team.
Chainlink Overview
Chainlink VRF and Chainlink Price Feeds bring a new level of transparency to our game and and we are excited to establish an unparalleled gaming experience in our NFT jungle with the help of various Chainlink services.

About Chainlink

Chainlink is the industry standard for building, accessing, and selling oracle services needed to power hybrid smart contracts on any blockchain. Chainlink oracle networks provide smart contracts with a way to reliably connect to any external API and leverage secure off-chain computations for enabling feature-rich applications. Chainlink currently secures tens of billions of dollars across DeFi, insurance, gaming, and other major industries, and offers global enterprises and leading data providers a universal gateway to all blockchains.
Learn more about Chainlink by visiting or reading the developer documentation at To discuss an integration, reach out to an expert.

About CyberKongz

CyberKongz started as a collection of 1000 unique and randomly generated non-fungible tokens (NFTs) created in March 2021. Although there was no pre-release or advertising campaign, the 34x34 pixel CyberKongz images achieved great popularity due to their suitability as profile pictures at a time when the idea wasn’t as entrenched in the mainstream. Over time, the shared idea of furthering the development of CyberKongz as a community-based metaverse project emerged.
Learn more about CyberKongz by visiting and to learn more about “Play & Kollect”.


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