I liked the cute and simple character visuals and animations. The tutorial text was a bit confusing to read and try to remember at first, but when I actually played a level, it made sense. This seems like a good foundation for a puzzle game. Maybe add more unique and/or challenging red boys for later levels so the player really has to think hard about how to beat the level. The biggest gripe I had was the music being pretty repetitive and hard to listen to, but I understand making good music is difficult, which is why I just got some royalty free music for my game. The sound effects were a nice touch. The final boss was kinda confusing because it seemed like you had to have a certain amount of blue boys to even take down the boss's number once, which seems different from how the other red boys work, and I had to figure out for myself that you have to run to the corner to stay alive. I did like the little ending where everything turns blue. This game definitely has potential, it just needs some extra work in my opinion. Good job, either way!