The in-game scene can be turned over by waiting until the end, and the menu can be closed with the M button, so basic gameplay is possible! However, I couldn't use the vending machine well because there seemed to be only esc keys that I could use to close the vending machine window after purchasing items from the vending machine.
I couldn't understand exactly what "Does your PC run pretty fast?" If you mean PC performance, my PC is pretty fast!
+ The game turns off even if I press esc in less than a second.