Hello,
The game is free, so there shouldn't be any risk involved (except for maybe a few minutes of download). As for assurance that there is an actual game, yes, there is a game. A quick search on YouTube will easily confirm this.
Just wondering, what were your reasons for assuming that there wasn't an actual game? Because if there's something that I'm missing as a developer or a red flag that was set off for you, I would wanna hear about it.
Hope this helps!