In your Adventuron source code, can you add the game_information {} section and recompile? This will avoid the error message at the start of the game. As a minimum, you'll need to add:
- copyright_message
- game_name
- game_version
- uuid
- written_by
- year_of_release
These are important for bibliographic reasons.
Under the Embed options on your project page, can you select Click to launch in full screen? This is different to Adventuron's default opening in full screen and allows the game to occupy the whole browser window, rather than use an iframe.