Thanks for point out that window vs fullscreen issue. I will try to keep that in mind next time :D
10% of the food should have the right answer.
50 units of food rendered at all given time so there should be 5 food pieces with correct answer.
The movement speed is indeed tied to mouse distance.
This was intentional but I might have forgotten to limit to that speed :D:D:D
Thank you for playing and for the good feedback!