Gaming & metaverse: Web3 developer tools

Best for Wallets, contracts and NFTs in Unity and Unreal

Chains

Ethereum Base BNB Chain Avalanche Arbitrum Polygon XRP Ledger testnet Hedera Any EVM chain (no specific chain named)

Price

SDKs free/open source; platform plans Growth $99/mo, Scale $499/mo, Pro from $1,499/mo with free usage allowances (first 1,000 wallets, 1M RPC requests)

License

Apache-2.0

Game-engine SDKs for in-app and smart wallets, contract calls, tokens, NFTs and marketplaces. Free and open source; thirdweb's platform plans apply for heavier use. The Unity SDK is active; the Unreal plugin moves more slowly. Its chain pages cover thirdweb as a whole, not the game SDKs specifically. No Solana.

Best for Connect players' existing EVM and Solana wallets in Unity

Chains

Ethereum Solana Base Avalanche Arbitrum Polygon

Price

Free Starter tier (500 MAU, 2.5M RPC calls/mo); Pro $89/mo; Growth $350/mo

License

Reown Community License (source-available, not OSI)

Unity package that connects players' existing wallets through WalletConnect and adds a wallet modal. Needs Unity 2023.1 or later and targets mobile, desktop and WebGL. Free starter tier. Source-available under Reown's own license, not an open-source license.

Best for Embedded wallets and gas sponsorship for Unity games

Chains

Ethereum Solana Base BNB Chain Avalanche Arbitrum Polygon

Price

Free tier (2,000 ops, then $0.01/op); Growth $99/mo; Pro $249/mo; Scale $599/mo; Enterprise custom

Embedded non-custodial wallets, smart accounts and gas sponsorship for Unity games, with a free tier. Its own README calls the Unity SDK a work in progress, and built-in social login isn't available in Unity, so you need a third-party auth provider.

Best for Open-source Unity toolkit for Solana games

Chains

Solana

Price

Free (open source)

License

MIT

MagicBlock's MIT-licensed Unity toolkit for Solana: full RPC, wallets including Phantom, SPL tokens, Metaplex NFTs and the Mobile Wallet Adapter. Supports Android and WebGL.

Best for Modular open-source Unity SDK for EVM chains

Chains

Ethereum Base BNB Chain Avalanche Polygon

Price

Free (open source)

License

LGPL-3.0

ChainSafe's modular C# SDK for wallets, contract calls, NFTs and tokens in Unity games. Free (LGPL-3.0). Development has slowed: the last release and commit were in November 2025, so check activity before you build on it.