Treasure Hunter

Search for treasure boxes hidden in randomly generated maps setting sensors, and get them by digging the ground or salvaging from the sea.
How strongly the sensors react depend on multiple conditions, so you infer the location of treasure boxes by the strength of the sensors reaction, and you make the cost lower to increase your property efficiently.
If you dig the ground here and there without thinking, you may lose your money. To avoid that, you shoud use your brain.
You need only few minutes to play a single stage, and also you can save the game and restart it later, so that it is useful when you need to kill a little time.
It is all free and you'll never be charged any money.