Scroll zkEVM Beginner's Guide

This article will introduce beginners to how to interact with L2 Dapps. We will take Scroll zkEVM as an example to explain how to get started with this layer 2 network and interact with Ethereum L2 Dapps. The article will demonstrate using an on-chain tic-tac-toe game running on the Scroll L2 network. Learning the skills in this guide will help you master the basic methods of interacting with other layer 2 networks.

Preparation: Install Wallet

If you have already installed MetaMask or a similar wallet, you can skip this step. Otherwise, please install the appropriate wallet version based on your device type.

Step 1: Set up the Scroll L2 Testnet and Goerli Testnet

Scroll zkEVM has currently launched its alpha testnet, which is a Layer 2 network compatible with the EVM( Ethereum Virtual Machine). This means that smart contracts written for the Ethereum network can be deployed on Scroll zkEVM using the same tools. The Scroll L2 alpha testnet is currently connected to the Goerli test network on Ethereum L1. The Scroll L2 network batches transactions and sends them to the Goerli L1 network to "finalize" the transactions. This relies on the security of the Ethereum L1 network while achieving scalability, as not every transaction needs to be published on the Ethereum network.

You can visit the Scroll official website and follow the instructions to add the network to your wallet. You also need to add the Goerli network to wallet ( if it hasn't been added yet ).

Step 2: Obtain Goerli test ETH

After setting up the network in the wallet, you need to get some Goerli ETH from a faucet. There are multiple faucets to choose from, such as Alchemy's faucet, PoW mining faucet, and a faucet that requires Twitter login, among others. You can choose one or a combination of several to obtain enough test ETH.

Step 3: Bridge ETH from Goerli to Scroll L2

After obtaining Goerli ETH, the next step is to bridge part of it to the Scroll L2 testnet. You can visit the official Scroll bridging interface and follow the on-page instructions to transfer ETH to the address on the Scroll L2 testnet. Please note that this process may take some time to complete.

Step Four: Experience the On-Chain Tic-Tac-Toe Game

After successfully transferring ETH, you can try playing the on-chain tic-tac-toe on Scroll L2. Connect your wallet to the game page and create a new game. This is a multiplayer game, and you need to add a friend's address or use a second wallet as an opponent. After creating the game, select it from the game list and start playing.

This game has another interesting feature: if you make a mistake at any step or don't want to lose the game, you can reset the game at any time.

Step 5 ( Optional ): Explore other Dapps on Scroll L2

If you want to test more Dapps and games on Scroll, you can visit the Dapp list page provided by Scroll to learn more options.

By following the steps above, you can initially grasp how to operate and interact on L2 networks like Scroll zkEVM. These experiences will help you better understand and utilize various layer 2 network solutions.