there is no proof for the enduser that demo is running on the tangle. i mean what purpose has it? maybe it is even just a little game in the browser without any IOTA transactions.
please just add the IOTA address or make a wallet integrated into the game
The end-user has no way of confirming that at the moment, but that's also true for the official iota flash channel presentation demo Lewis Friberg provided to the community. We plan on releasing some parts of our software on the GitHub with the open source license after we secured our niche in the market, to give some values back to the community.