The apples work fine for me now, but I see what you mean by they stick to one area, I have most fixed most of it though.
As for the sounds when you take damage, I cant find one I like, I previously thought about this when working on the spikes, but after 30 mins of searching, I found nothing, if i can get a sound, I'll will work on adding it.
Im am planning on adding "bad apples" to spawn in the space unused by the spikes, so untill I have decided, I might not be adding any more spikes.
The "bad apples" i plan on adding will cause a square that changes random colours to spawn in the back ground and perk's spawning.
As for removing the safe zone, It removes itself when Score < 490 is true.
I'm thinking of diving into the deep abyss of code called "The menu system" and adding a difficulty selection,
This will add more variety to the game, but will just get to confusing since I really made a mess of the menu's...Outline of difficulty selection:
Easy - Safe zone stays through out the game, lots of apples spawn.
Medium - Less apples spawn, safe zone gets removed during the game. (Current set up)
Hard - No safe zone, Same amount of apples as Medium, No safe zone, More Spikes.
Another small thing I will add is a string at the top right of the screen to notify if the frozen perk is active or god mode, so you know when its on or off..
But for the jaws theme, it kinda add's slight comedy to the game.