The entire game was perfect.
I loved the little collectables. They didn't add much to the gameplay, but they did make the environments more alive. I was excited to get to the next level to see what bug I would find.
I'm also really impressed by how creative the puzzles and interactions were. I thought the game would be too easy, but there were a few times where, after solving a puzzle, I realized how obvious the solution was and felt silly. The puzzles are so well designed. It felt like an escape room game, but the objective is to get everyone else out of the room by annoying them.
The length of the game is perfect as is, but I would happily play through more levels if they were available.