i never could quite get a handle on the controls, so i didn’t get very far. even the tiniest of cursor movements made for a fast disorienting turn. do the keys open up specific doors? or just any doors? is it random where the first appears? i played like dozens of times and it felt like 90% of the time there was no key in the initially-accessible area at all. also, i’m having trouble mapping your explanation of the limitation-use to “multiple applications”, could you elaborate on that?