This is a creative game with both leaping and jumping. The gameplay is quite fun, the graphics are nice, the audio fits very well, the BGM is relaxing.
Gameplay wise I feel like there are three phases: At first there are so much spaces and so few corns, and so the gameplay was more or less about chasing corn kernels. Then in the mid-game there are more and more corn kernels, but still enough space to move in; and the gameplay was pretty much rolling left and right popping everyone. Soon enough however, the space gets so constricting, and the gameplay becomes one of digging...
I think the gameplay starts becoming rather... not as fun as how it started once it reaches the late phase... I really wish the other corn kernels had more pushing power...
Also I think you should make the player's corn kernel a little bit different than the rest.
EDIT: Okay there's a fourth phase... at some point it's getting so constricted it's impossible to even dig and wait, and the constriction also allows you to clip through the wall as other comments have pointed out. I finally got stuck after I got send out of the wall and couldn't manage to re-enter this time...