The difference often blurs between what qualifies as true idle gaming vs simulation-style mechanics: While idle is more “leave-it-on" gameplay (you collect resources while AFK), many sim games offer hybrid versions. For instance, the Clash of Clans **Builder Base Level 5 setup lets builders work autonomously**, allowing players to step back without sacrificing momentum. This crossover helps simulation games thrive—not unlike those coffee apps that auto-fill beans while you sip from another cup.