Clair Obscur: Expedition 33 consists of 3 main Acts , preceded by a Prologue set in Lumiere. Although there is also an Epilogue, it is generally considered part of Act 3 due to how it is presented in the game. The Acts focus on different characters and stages of the story:

• Prologue: Set in Lumiere
• Act 1: Gustave
• Act 2: Verso
• Act 3: Maelle (includes the Epilogue)

Thus, the game is structured into three main Acts plus a Prologue, with the Epilogue integrated into the final Act