Theres obviously plenty of improvements that could be made here, thats how it is in basically everysingle game:)
I see this as a great starting point, love the mechanics and i love figuring out what is real and whats not, the main thing that it misses is sound, i usually say that sound makes or breaks a game. Next i recommend you spend more time on the style of the game, black and white colors seem a little bland but they work fine for a simplistic style so thats not the problem, the problem comes when you add a vibrant red to the mix, it throws off the color pallete, look up how complementary colors work it could help a bit. Perhaps a dark brownish-red may look good, you need to expirement
Also i suggest adding a roof since it feels too open and theres far to much white, And ofcourse the main takeaway is to refine your programming skills and refine the mechanics:)
Please dont take my critiques negatively, im only critiquing to try to help you improve! :D Either way with only a week to make a game you did a great job! making a game in just one week is no easy task, so props to you! :)
Also if you dont mind, check out my game too, i'd appreciate it a lot! :D