The game is set in a dark, surreal fantasy world. The title "Lapsus" (Latin for "lapse," "slip," or "error") hints at the game's thematic focus on memory, mistakes, and a dreamlike state.

One of the group's favorite tactics is to use compromised credentials, often obtained through phishing or dark web marketplaces, to gain initial access to target systems. They then use these credentials to authenticate to cloud services, such as Microsoft 365 or Google Workspace, and move laterally within the organization.

The build includes over 380 individual characters .