The WebGL seems to have a movement bug for me where the character moves incredibly slow. Way too slow to get more than a few food items before the time limit, but at random will get tiny bursts of speed. (Linux Firefox)
So next I tried the Linux standalone. Even though I can get into the game by pushing buttons, once the game starts, the linux version doesn't respond to ANY controls at all.
Finally I brought it over to my Windows box, and tried the Windows standalone version and initially had the same result as the Linux version, but for some reason after the second attempt at loading it, it started working and I was able to move at normal speed.
Outside of the technical issues, it's a cute game and an interesting concept. The pixel art is quite good, and the game controls well once I was able to get it working.
EDIT: I tried the WebGL version under Firefox for Windows, and the player was able to move normal speed. So the slow movement only seems to happen under Linux for me for some reason? Hopefully that helps.