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Game ads in Unity to pay for gas fees

Integrate game ads in your web3 game.

Overview#

This sample project showcases the Openfort integration with Unity LevelPlay.

The sample includes:

Application Workflow#

Integration workflow

Prerequisites#

Set up Openfort dashboard#

  • Add an NFT contract

    This sample requires an NFT contract to run. We use 0xbed6a05ce8719bc00db1cc81a814192c82be1bb1 (contract deployed in 80002 Mumbai). You can use it for this tutorial too:

    Contract Info
  • Add an ERC20 contract

    This sample also requires an ERC20 contract to run. You can deploy a standard one and then add it to the Openfort dashboard following the same logic as above.

  • Add a Full Sponsor Policy

    We aim to cover gas fees for our players when they mint the NFT (if they have watched the ad video). Set a new gas policy for that:

    Gas Policy

    Add a rule so the NFT contract uses this policy:

    NFT Policy Rule

    Add also a rule for the ERC20 contract, as we want to send some ERC20 tokens to the player to be able to test the sample:

    ERC20 Policy Rule
  • Add a Fixed Charge Policy

    The players will be charged with 1 in-game ERC20 token when they decide not to watch the ad:

    Fixed charge policy

    Add a rule so the policy applies to the NFT contract:

    NFT Policy Rule
  • Add a Developer Account

    Enter a name and choose Add account:

    Developer account

    This will automatically create a custodial wallet that we'll use to send the ERC20 tokens to the players. IMPORTANT: Transfer a good amount of tokens from the created ERC20 contract to this wallet to facilitate testing.

Set up ironSource#

  • Get Unity Cloud keys#

    Before going into ironSource, go to the Unity Cloud dashboard and open Unity Ads Monetization using Shortcuts:

    Unity Cloud dashboard: Unity Ads Monetization
    • Create a LevelPlay Service Account

      Now go to the API management section and choose Create LevelPlay Service Account:

      Unity Cloud dashboard: Create LevelPlay Service Account

      Copy and save the Key ID and the Secret key somewhere safe and choose Done:

      Unity Cloud dashboard: Copy LevelPlay Service Account credentials
    • Get Monetization Stats API Access

      Copy and save the API Key. Choose Create API Key if it's not already there:

      Unity Cloud dashboard: copy Monetization Stats API key
    • Get Organization Core ID

      Copy and save the Organization Core ID:

      Unity Cloud dashboard: copy Organization Core ID
  • Create an ironSource LevelPlay app#

    Go to the ironSource dashboard and under the LevelPlay section, choose Add app and enter your app details:

    ironSource: new app

    Select the following settings and choose Add app:

    ironSource: app details

    Activate Rewarded Video as an ad unit and choose Continue:

    ironSource: activate ad units
  • Set up SDK Networks#

    In the Available Networks panel select Unity Ads:

    ironSource: available networks

    Enable the Unity bidder auto-setup option, add all the credentials from the Get Unity Cloud keys section and choose Save:

    ironSource: adding Unity Ads

    Unity Ads will have appeared as a new available network. Choose Setup:

    ironSource: setup Unity Ads

    Because we enabled the Unity bidder auto-setup option, now you can choose Add bidder:

    ironSource: add bidder

    The needed information from Unity will be automatically retrieved. Choose Save:

    ironSource: save app

Set up Unity Cloud#

Thanks to the Unity bidder auto-setup option, a new project has been automatically created in the Unity Cloud dashboard. Now your LevelPlay Service Account needs to have some admin roles over this newly created project. Go to Administration --> Service accounts and choose your account:

Set up Unity Cloud: service account

Scroll down and choose Manage project roles:

Set up Unity Cloud: manage project roles

Select your project and choose Next:

Set up Unity Cloud: select project

In the Admin dropdown select:

  • Player Resource Policy Editor
  • Project Resource Policy Editor
  • Unity Environments Admin

In the LiveOps dropdown select:

  • Cloud Code Script Publisher
  • Triggers Configuration Editor
  • Leaderboards Admin
  • Cloud Code Editor

Choose Save:

Set up Unity Cloud dashboard: add roles

Set up ugs-backend#

Set up unity-client#

In Unity go to Edit --> Project Settings --> Services and link the unity-client to your UGS Project:

Services settings

Select your Environment:

UGS environment

Under Assets --> Scripts --> Controllers open the AdsController.cs:

AdsController.cs

Fill the appKey variable with the ironSource LevelPlay app key and save the script:

ironSource LevelPlay app key
ironSource LevelPlay app key

Build to Android#

In Unity go to Android Player settings and make sure Other Settings looks like this:

Android Player settings

Also, make sure to sign the application with a Keystore in Publishing Settings:

Application Signing

Return to Build Settings and choose Build:

Build

Send and run the .apk on your device.

Conclusion#

Upon completing the above steps, your Unity game will be fully integrated with Openfort and Unity LevelPlay. Always remember to test every feature before deploying to guarantee a flawless player experience.

For a deeper understanding of the underlying processes, check out the tutorial video.

Get support#

If you found a bug or want to suggest a new [feature/use case/sample], please file an issue.

If you have questions, or comments, or need help with code, we're here to help: