Think you might be on to something here.

Im thinking a suite of crazy/mad/stupid mini trading games. Havn't given it too much thought, but what sprung to mind was a kind of duck-shoot, where if you had control of a non sequential order execution book (e.g. crypto rush), you could 'shoot' at peoples orders in a pre-defined/announced range of price, possibly. Could even use a troll-box to announce. Be fun watching everyone shuffle their prices around hoping to get 'hit'.