Just wanted to put this here in case anyone else was having difficulties with finding how to install Tilemap Extras. Unfortunately, the package does not have a release candidate for every version of Unity. At the time of writing, Unity version 2020.3 does not have a release candidate and all versions are “preview”. There are two (easy) ways to install from this point:
- Install Preview
The first option is to install the Preview package from Unity. To do this you must:
- Open the Package Manager settings, which can be found in Edit > Project Settings > Package Manager.
- Toggle “Enable Preview Packages” on, which can be found in Advanced Settings.
After this, the package can be installed via the package manager and will have the “Preview” tag.
- Manual Install
- Identify the version of Unity you are currently using.
- Navigate to https://github.com/Unity-Technologies/2d-extras and open the branch which corresponds to your Unity version (For mine, 2020.3, I used https://github.com/Unity-Technologies/2d-extras/tree/2020.3).
- Click the green “Code” button to open the dropdown and select “Download ZIP”.
- After installation, extract the contents.
- With the contents extracted, open the package manager and click the “+” icon in the top-left of the Package Manager window, clicking “Add package from disk”.
- Navigate to the package and select the package.json file.
Unity should then reload the project.