  During an activity, knowing the mental workload (MWL) of the user allows to
improve the Human-Machine Interactions (HMI). Indeed, the MWL has an impact on
the individual and its interaction with the environment. Monitoring it is
therefore a crucial issue. In this context, we have created the virtual game
Back to Pizza which is based on the N-back task (commonly used for measuring
MWL). In this more playful variant, users must carry out orders from customers
of a pizza food truck. It is an interactive game that involves the audience of
the IHM'23 conference, choosing several parameters like the number of
ingredients. During this experience, the objective is to measure MWL in real
time through an ElectroEncephaloGraph (EEG) and visual feedback on MWL level is
given to the audience. With this demonstration, we propose to present a concept
of a virtual interactive game that measures MWL in real time.
