Thank you for your feedback! I wanted saving flowers while in big mode to be a sort of strategy so that when you lose big mode you have flowers readily available to collect if you avoided them. But someone else has given similar concern to yours, so I think you are right that it would be more intuitive to prolong big mode when collecting flowers. And sorry about no exit button, that was a bit of an oversight lol, but as a workaround you should be able to press F11 to go into windowed mode and then exit the game from there.