The crops need harvesting, the workshop is short on supplies, and the storage system has somehow become a bigger nuisance than the invading undead. You can put zombies on repetitive jobs, but there's always another production bottleneck waiting to spoil your plans. Even a simple errand has a habit of turning into an afternoon's work.
The full game is already unlocked, letting you experience the complete town-building, resource management, zombie automation, and defensive gameplay without additional content unlocks. Researching new technology and sorting out your production chains takes patience, while the occasional undead assault adds another unwelcome item to your daily schedule. Running a town has seldom felt quite so absurd.