Hi! I liked the game jam submission so I checked out some of your other stuff -
For a first game this is very well-polished! Simple design with clean, effective graphics and a control scheme that's immediately understandable. I would imagine your background with iOS development where things are often boiled down to simple but fun gameplay loops helped ^^
to clarify, I do get 10 ammo from getting a question correct. However, I found that when holding a direction (WASD) and firing, occasionally the ammo count will tick down more than once leading me to have less bullets than intended :o
