My game is all about exploring the quantum world. While playing, your task is to pay a merchant with normal, but also with special quantum coins, that include features such as superposition, measurement, entanglement and tunneling. The quantum coins have multiple values simultaneously (superposition) and only when you click on it (measurement) it collapses to one of those values.  Sometimes it can be tricky because both the amount that you have to pay and the values of the coins are chosen randomly.