The game is in the style of Boulder Dash, the first developed by Michael Batty back in 1990 for a PC based on the Z80.
The plot is the same, but has its own characteristics. for example, you can extend the time allotted to the level by eating one of the "sausages" that lie in the rooms. The type of task is similar. Anyone who has played “Boulder Dash” will use their experience in this game.
The rules of the game are simple: collect diamonds in the dungeons. The amount of diamonds is predetermined. When you find diamonds, look for the exit, the door (hatch), and so on.

The source can be found here: https://github.com/pbadun/EarthShaker