The machines are ordinary computers. They can absolutely be hacked or mucked with. Try not to get caught.

There are back rooms and they can be explored- but they’re all fairly ordinary. Laundry, break rooms, kitchens- the regular stuff that allows a building to function.

There are no discoverable secrets about the crystals themselves. They merely function as a universal constant from their origin, being full of magic molecules. The nerfing is in a different castle. However, a layout plan may be heisted to give foreknowledge of the upper parts, and therefore a competitive edge.