This article presents FakeMuse, a serious game about forgery and authentication in archaeological museums that aims at letting users playfully approach this issue. The player takes on the role of a museum curator who is presented with several artifacts that s/he must decide whether they are authentic or not. As the player progresses in the game, s/he can gather additional information by reading magazine articles or earn cultural money by playing minigames with archaeological content. In this way, s/he will be able to make more informed decisions about the authenticity of artifacts. FakeMuse is an Android application that can be played also while visiting an archaeological museum. Evaluation with a group of selected testers showed promising results.