GoldRush

The poor miner loses the key to the chest where the most valuable for him thing. But the store nearby just sale another of the same key. What luck!!!
But not so simple to buy it you need to bring a whole bunch of gold. Good thing we have the true pick, which can be used to mine gold and to banish the Golden dragons who want to steal(!!!) YOUR GOLD!!!
If gold was no longer fits in a knapsack, You can always buy a bigger sack in the store, or just push gold right up to the door of the store.

Good Luck! And don't forget to buy a key!))