Nice. I'm currently working on my masters project which will involve something a little similar to this so it was good experience to try it too.
Not sure about the question of if games are addictive. I mean I occasionally get into a book and will read it for the next couple of days and do virtually nothing else and the only reason I stop is because I finish it, and occasionally the same thing happens with games. So games are as addictive as books, they just last longer. There really needs to be a different word for addictive behaviors that differentiates it from things like drug addiction. I put "not sure" purely because I wasn't sure how it would be interpreted because ultimately I like video games and when they're done well they're addictive, but not in a negative way, in a "holy shit this is awesome" way.