nice concept here, i'm currently working on something similar with flippers. you should allow the use of the left and right arrow key as well, since a lot of people will find that both more intuitive and more comfortable.
i found a glitch, if you discover a reaction and then immediately try to combine said thing with something else, it'll complain there are too many things in the circle
one little problem i noticed way back when but forgot to point out, is that if your mouse is positioned near the bottom of the screen spacebar does not work (for launching and smashing and stuff)
this game shoots my cpu up to 100% even with graphics turned down and right clicking made it hang... either i need a better computer or something is really wrong, or both
"increase the amount of gummies we can smash on a normal hit to the ground, we can only hit one "
ummm... i've gone WAY farther because I bounced on a stream of gummies, why would you want to kill them and hit the ground?
it stopped spawning enemies in survival mode after... wait what's that wierd spinning triangle on the side of the screen, maybe if i kill it... oops it hid again (5 minutes later) there we go
also, how do i get 5000 clicks? I beat the whole game with 1 click (and maybe 5 to select items), theres no point to clickclickclick
5 stars anyway btw cuz its shiny pixaly goodness
i blew up the weird kitty statue, and i wonder what happens if u beat the final boss before getting all the crystals, because I got 100% before fighting him
running gives you about 12 levels each time, and i can get 34000 on the flying by pushing spacebar to start and then doing nothing, but i love this game anyway because its so easy to be awesome
 "//PuzzleBox"){kind=icon}
 "Sarah's Run (preview)"){kind=icon}
 "Box Kitteh"){kind=icon}
 "Alxemy"){kind=icon}
 "ShellShock Live 2"){kind=icon}
 "Burrito Bison Revenge"){kind=icon}
 "Achievement Unlocked 3"){kind=icon}
 "Jelly Escape"){kind=icon}
 "Pixel 2"){kind=tracking}
 "Monster Arena"){kind=icon}
 "Arzea"){kind=icon}
 "DuckLife"){kind=icon}
 "Epic Combo!"){kind=icon}
 "William and Sly 2"){kind=icon}
 "Flaming Zombooka 3 : Carnival"){kind=icon}
Well, I made this in a little under 6 days, so I guess I could spend a few minutes tweakin' the controls :P