Dig Wells
Dig Wells is a special upgrade in Loot Grinder, the free medieval idle clicker.
What it does
Wells provide water during droughts, preventing peons from dying of thirst. (Wells provide water during droughts, preventing peons from dying of thirst.)
Cost
It costs 1.20B loot and is a one-time purchase.
Why it’s useful
Fewer peons lost to disaster means your loot-per-second never craters mid-run — protection upgrades pay off as insurance on everything else you’ve built.