The aim of this chapter is to present a range of terms and concepts: “Ludopedagogy”, “Serious Game”, “Gamification”, “Ludification”, “Ludicisation”, “Serious Toy”, “Serious Gaming”, “Degamification” and “Toyification”. They are all related to “ludopedagogy”. To contextualize what we're saying, we'll use an artifact - a sponge - as a support. The aim of this approach is to show how a simple artifact can be instrumentalized to help people discover different play-related concepts and utilitarian applications. This approach shows that social constructs and individual subjectivity are at work in understanding all these terms.