How storage capacity works and why production stops

Production is continuous but storage is finite. When food, wood, stone or gold reaches the kingdom storage cap, further production of that resource cannot be retained. This is why a healthy production rate can appear to stop. Spend resources on a useful upgrade, raise storage capacity through the Warehouse and related progression, or use the resource in research or training. Inventory crates obey the same cap: opening a 1,000-resource crate while only 200 capacity remains adds no more than the available 200. Check capacity before consuming a large cache.