Pause / Save function for drone minigame


I’ve played for roughly 40 minutes and just passed Wave 20. Since I can’t keep playing right now it is quite frustrating to close the game knowing that I have to start all over again with waves that were really easy and also knowing that this probably happens the next time I play it.
To prevent this unpleasant experience I suggest adding a save feature to the drone minigame so that I could start with the wave that I was previously at.