There are two ways to embed Adventrs on Wordpress sites.
The Best Way
Add a Custom HTML block and paste your Adventr's responsive embed code into the html area.
The easier (but feature-limited) way
You can add an Embed block and paste the Adventr's public URL (not the embed code) to your Adventr. It will automatically expand into an embedded video:
However, if you use Wordpress's standard Embed block, Wordpress may disable features like fullscreen, sharing and external links.