Great combo of Tetris and Super Hexagon! Well done!
Was fun, a few things.
Make a new sprite origin for the gun, and label it whatever. Place it in the middle of the barrel of the gun at the end. Then make the bullet spawn from the gun sprite at the new origin you just made.
After you miss all shots, reloading causes the bullets to go through the green square. Check this out,
You need to fine tune the boundaries such that apples and other fruit don't spawn past the visible field. Also, what rate are you checking input, a few times it seemed to not take my input and caused me to die.
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