Historical price for crypto in game are placed in game/data folder, i.e. C:\Program Files (x86)\Steam\steamapps\common\Crypto Miner Tycoon Simulator\data
, BTCprice.csv DOGEprice.csv ETHprice.csv LTCprice.csv XMRprice.csv

There are 2 columns in the csv file. First column being the time in unix timestamp, it is seconds since year 1970. We can use websites like www.epochconverter.com to convert timestamp into human readable date. Second column is the price itself.

The csv files get read upon starting the game... so restart the game whenever you edit price.

Example of how to change price on 2010-10-02
1. Look for price for 1286060862 in BTCprice.csv , it should be 0.06145
2. Edit price then save and close the file
3. Restart the game