An EVM-compatible blockchain testnet for Ultra, optimized for gaming dApps with fast finality, low-cost UOS gas, and Chain ID 18881 for developer testing.
Ultra EVM Network Testnet is a public EVM‑compatible sandbox for the Ultra (UOS) ecosystem that mirrors the production Ultra EVM while using test UOS for gas. It lets teams safely prototype game economies, mint and trade ERC‑20/721/1155 assets, test bridges and wallet flows, and rehearse marketplace or on‑chain logic before mainnet. Developers can use standard Ethereum tooling (Hardhat, Foundry, MetaMask) and a faucet to obtain UOS for deployments and integration tests.
Ultra EVM Network Testnet is uniquely tailored for gaming dApps by integrating with Ultra’s account and marketplace stack while remaining fully EVM‑compatible, so porting Solidity smart contracts is straightforward. For performance comparison, official testnet metrics are not publicly standardized as of Sep 2025—average gas cost, block speed, TPS, and activity are not formally published—but gas is effectively negligible (faucet‑funded) and confirmations occur within seconds, offering a faster feedback loop than Ethereum L1. It also uses UOS as the native gas token and is designed to interoperate with Ultra’s cross‑chain bridging, features most generic testnets lack.
Ultra EVM Network Testnet uses UOS as the gas token for transaction fees. You can obtain UOS by bridging from other chains or purchasing using thirdweb Bridge, or through faucets (for testnet).
To bridge UOS to Ultra EVM Network Testnet, connect your wallet to thirdweb bridge, select your source chain, choose the token you want to bridge, select Ultra EVM Network Testnet as the destination, enter the amount, and confirm the transaction. The bridge will handle the cross-chain transfer instantly.
To build on Ultra EVM Network Testnet you can use thirdweb, which provides an easy way to build, monetize and scale your apps, games or agents. You can find detailed guides and documentation on https://portal.thirdweb.com to get started quickly.
To add Ultra EVM Network Testnet to your wallet, you can connect your wallet and click on [Add to Wallet] button at the top of the page. Alternatively, you can add the network manually using the RPC URL and chain details and add it to your wallet's network settings.
To send UOS on Ultra EVM Network Testnet, ensure your wallet is connected to the Ultra EVM Network Testnet network, enter the recipient's address, specify the amount of UOS to send, review the gas fee, and confirm the transaction in your wallet.
