Abstract
Zero forcing is a combinatorial game played on a graph where the goal is to
start with all vertices unfilled and to change them to filled at minimal cost.
In the original variation of the game there were two options. Namely, to fill
any one single vertex at the cost of a single token; or if any currently filled
vertex has a unique non-filled neighbor, then the neighbor is filled for free.
This paper investigates a $q$-analogue of zero forcing which introduces a third
option involving an oracle. Basic properties of this game are established
including determining all graphs which have minimal cost $1$ or $2$ for all
possible $q$, and finding the zero forcing number for all trees when $q=1$.