> ## Documentation Index > Fetch the complete documentation index at: https://developers.particle.network/llms.txt > Use this file to discover all available pages before exploring further. # Unreal Engine (No-Code) SDK > Interacting with Particle Auth within applications made using Unreal Engine. ## Particle Auth for Unreal Engine Extending beyond directly programmatic implementations, **Particle Auth** also features full support for **Unreal Engine 5** through a no-code interface, enabling the integration of Particle's Wallet-as-a-Service in a familiar and straightforward environment when building games on Unreal Engine. *** ## Getting Started Getting started with the **Particle Auth Unreal Engine SDK** is simple, although you must manually download and install the SDK using the [`particle-unreal` GitHub repository](https://github.com/Particle-Network/particle-unreal). To install: 1. Open your project's root directly (you'll find your `.uproject` file here). 2. Create a new directory, `Plugins`, or skip this step if `Plugins` already exists. 3. Navigate to [`Plugins/ParticleSDK` within `particle-unreal`](https://github.com/Particle-Network/particle-unreal/tree/main/Plugins) and copy it to your `Plugins` directory. 4. Open the **Unreal Engine 5** editor, head over to **Menu**, then **Edit**, and finally **Plugins**, in which you'll find an option to enable **ParticleSDK**. *** ## Examples of utilization ### Initialization To begin, you'll need to create a config object with your `projectId`, `clientKey`, and `appId` filled in. Find a guide on how to set up a project and find the required keys: [Dashboard Guide](/social-logins/dashboard). After retrieving and setting the necessary values, you must call the `Init` function to complete the initialization. The `Init` function accepts the following parameters: * **Default Browser Widget**: Typically set to `W_ExecuteWebBrowser`. If you prefer to use a custom `WebBrowser` blueprint, you can do so if it follows the structure of `W_ExecuteWebBrowser`. * **In Config**: This links to the previously defined configuration object containing `projectId`, `clientKey`, and `appId`. * **In Theme**: An optional JSON string for customization. For more details, see [Particle Auth Set Auth Theme](/social-logins/auth/desktop-sdks/web#usecustomize). * **In Language**: Specifies the language used in the modal. Options include `en`, `zh-cn`, `zh-tw`, `ja`, or `ko`. * **In Chain Name & In Chain Id**: Defines the primary chain to be used, either EVM or Solana. For details on specific `chainId` and `chainName` configurations, refer to [EVM Chains Structure](/social-logins/network-coverage). Particle Network app Unreal. Particle Network app Unreal. ### Login The `Login` function is the core method for onboarding and account creation/sign-in within **Particle Auth** on **Unreal Engine**. It supports social logins and includes the following parameters: * **Preferred Auth Type:** (Optional) Specifies the authentication method. Options include: * `phone` for phone-based logins (sends a verification text and links the account to a phone number). * `email` for email-based logins (sends a verification email and links the account to an email address). * `jwt` for custom authentication using JWTs. * **Account:** (Optional) Used to pass the expected values for an email address, phone number, or JWT. Upon successful login, the function returns a **JSON** string containing detailed user information (such as email or phone, addresses, UUID, token, etc.) as event data. Particle Network app Unreal. Particle Network app Unreal. ### Sign Message To prompt a standard message signature (for general strings, not typed data), you can use the `SignMessage` blueprint. This blueprint displays a signature request for the end user to confirm. The `SignMessage` function includes the following parameter: * `Message`: The message to be signed by the user. For EVM chains, this should be a standard UTF-8 string. For Solana, it should be a base58 string. Upon successful confirmation, the signature is returned as event data via `OnSignMessageEvent`. Particle Network app Unreal. Particle Network app Unreal. ### Sign and Send Transaction `SignAndSendTransaction` is the core method for sending transactions on EVM and Solana. When called, it prompts the user with a transaction, allowing them to either confirm and push it to the network or reject and cancel the operation. The `SignAndSendTransaction` blueprint includes the following parameter: * `Transaction`: A string representing the transaction object/structure to be sent. For EVM, this should be a standard UTF-8 string; for Solana, it should be a base58 string (it can be a stringified object). You can also use the `MakeEvmTransaction` helper method to generate an EVM transaction, which can then be attached to the `Transaction` parameter in `SignAndSendTransaction` for no-code transaction creation. Upon a successful signature, the event data, including the signature, is returned via `OnSignAndSendTransactionEvent`. Particle Network app Unreal. Particle Network app Unreal. ### Sign Typed Data On **EVM** chains, you can use `SignTypedData` as an alternative to `SignMessage` for signing structured (typed) data. The `SignTypedData` blueprint includes the following parameters: * `Message:` The data to be signed is provided as a standard **JSON** string containing the data structure. * `Version`: **Particle Auth** supports all three versions of `eth_signTypedData`: `v1`, `v3`, and `v4`. By default, `v4` is used. Upon confirmation, the signature is returned via `OnSignTypedDataEvent`. Particle Network app Unreal. Particle Network app Unreal. ### Sign Transaction `SignTransaction` is a **Solana-specific** method for signing a transaction without pushing it to the network. The `SignTransaction` blueprint includes the following parameters: * `Transaction`: A **base58** string representing a valid transaction structure to be signed. Upon a successful signature, the completed signature is returned via `OnSignTransactionEvent`. Particle Network app Unreal. Particle Network app Unreal. ### Sign All Transactions The plural counterpart, `SignAllTransactions`, is another **Solana-specific** method for signing multiple transactions collectively without pushing them to the network. The `SignAllTransactions` blueprint includes the following parameters: * `Transactions`: An array of base58 strings, each representing a valid transaction to be signed. Once the function completes and the signatures are generated, they are returned via `OnSignAllTransactionsEvent`. . Particle Network app Unreal. Particle Network app Unreal.