I own this as a DRM-free download from another bundle.
First things first: There is no "game" here. Not in a sense that it would allow you to make any decision or change what is going on.
It is an anime style novel, with repetitive stills. There is no interaction other than hitting space bar to see the next line of text either.
The dialog is voiced, the texts in between are not. The writing is on the weak side. I found myself skipping a lot of the text and eventually giving up--which is not what I normally do--as the story drudged on and on and on without any sense for proper pacing, build up of tension, or conflict.
The characters are... what you might call "broken goods", with one of the two protagonists being on the naive side. Annoying even?
One positive thing to say about it: The tiny bit of shy, innocent romance build up between the two protagonists has its moments that manage to shine. Sometimes awkward, often weird... and in rare moments, cute.
The story itself pretends to focus on a treasure hunt, but only uses the latter as an excuse to introduce its readers to a string of American sights, from national parks to Las Vegas, presenting information and how they are worth a visit--with the romantic plot trying to be the salt in the fact-stew.
The facts are interesting, if you know absolutely nothing about those places, but at times also make you wish that if "somebody", in secret, wanted to write a travel guide, then maybe they should have just done that.
Either way, if facts about national parks in Nevada etc are your thing, and you like them presented with a tat of romance, then maybe give this a shot.
Unfortunately though, the book, while trying to be all at once, remains stuck in the middle; Being neither a good treasure hunt adventure, nor a good guidebook, and unfortunately not often enough a good romance.