Danganronpa Decadence gathers entries from the mystery visual novel series, built around a deadly killing game where trapped students must investigate murders among themselves. Exploration, evidence-gathering, and fast, theatrical courtroom trials form the core loop across its included chapters.

The collection lets players experience the series' twisting mysteries and memorable, larger-than-life cast in one package. It's aimed at both newcomers curious about the series and fans wanting its major stories together.