Upon first sight, the Just Jewels fruit machine looks like a basic Novomatic / Novoline (often called Gaminator) slot. It has 10 pay-lines and not a lot that is remarkable when you first start playing. But, after a few spins you realize it pays from right to left as well as left to right - cool.
More than that, the Just Jewel slots pays if the line is in the middle of the screen too. You have to play the game to see what I mean...
Probably out of all the Novomatic games I have played in recent years, this is the one that surprised me the most novel concept. The idea of a line being in the middle of the screen only is one I had not seen before, not even in Vegas.
I'm not sure it's enough, on it's own to make it a classic slot, but it makes you think different (as Apple say) and that has to be a good thing.