Hey man, love the game so far but I think it might need a few balancing tweaks.
The shootout game can be very unforgiving, especially the first round, which can make it feel unfair. The defense game once you've gotten to about 9 wins can sometimes shoot so many projectiles at once that it's near impossible to block all of them, and I think the math game could do with maybe simpler questions at later stages but just a bit of a harsher time limit.
Also I don't know about downloaded versions, but on the browser version I can't figure out how to exit the gallery, and you can't start a new game once you've gotten one of the endings without resetting the whole game.
Again, love the game and can't wait to see what you do with it :)