Lack of audio hurt it a bit for me, but I did enjoy the game from start to end without stopping. You did the theme really well, and put an emphasis on the mechanics/gameplay as opposed to spending a ton of time on  graphics and all that, which is very understandable. 

What I thought was decent:

*Fun gameplay with interesting challenges.

*Interesting incorporation of theme makes the game fun.

*Simple, colorful and good looking graphics. I especially though the end objective icon (the rotating square) looked interesting and it added some nice polish to the game.

*Simple controls.

What I think needs to be improved for the game:

*Audio would make the game more moody and interesting.

*Lack of polish in the movement of the player. I especially thought the camera was a little too close, the movement of the player was too slow, and the jump height was too high. I would recommend using Unity Standard Assets and adjusting the values of the scripts related to 2D platforming gameplay for this game. Looking at the rules for this game jam, this would have been allowed and there would have been no penalties.

*Lack of a tutorial.

*Bottom logos in the game (Unity WebGL and the game's name) are sort of cropped out. This makes the game look very unprofessional. Also, the game's name in the title in the bottom logo starts with a "G", but the name of this game is "Primary".

* Also, I do not know how to beat this level shown in the image below. There is a lack of directions on where to go to complete this level.