My spouse worked in a "kombini" for almost a decade. Having her looking over my shoulder while playing this almost felt like cheating.
Agreeing with Chaoseed that it would be cool with an expanded version (perhaps with a story).
Ahah, that's alright, and thank you! I was thinking that some questions would get tough enough that using a calculator on side would be suggested. So definitely not cheating. :)
I completely agree with idea of attaching a simple story to it if I were to expand it. I actually had a longer title in mind that would've have implied the possible story.