I had a blast playing this game. For some reason the cover art and screenshots really hooked me in, and the pixelart was simply beautiful. The music was really vibe and the sound design was on-point. The room mechanic, movement and progression at the beginning were all very solid. The intro at the beginning was also quite smooth and really hyped me up for what's to come.
I have a bit of criticism as well. Firstly, sometimes the building mode felt janky. The fact that it makes you exit building mode after placing a structure, but not after destroying a wall, and also freezing time while building mode is active were all quite unintuative. A description would've also been appreciated: I had no idea what the last three structures did (except the final one which made me win). Also, after the coin multiplicator machine, the game became very easy. I placed like 10 on screen and I didn't have to worry about money ever again. As a last nitpick, I didn't realise there was a money cap, so near the beginning I sold everything to restructure and only noticed later how I got only a portion of the money back. (This could be fixed by changing the money from "50 coins" to "50/100 coins".)
Overall, for a game made in 2-3 days, this is terrific. Great job for everyone who worked on it, and I'd love to see a more polished version (with building mode improvements, item descriptions, a more linear difficulty curve) released one day. Keep up the great work! :)