- Surprise Difficulty: Some puzzles look simple, even though they might be quite tough. On the other hand, there is a difficulty ranking system which will give you an idea of how tough a puzzle will be.
- The Tetris Effect: You will be thinking in terms of this whenever you see a grid of differently colored shapes. The fact that it has a level editor that requires an understanding of how the puzzles work doesn't help.
- They Copied It, So It Sucks: Catherine fans often accuse Pushmo of this, due to both games involving pulling out blocks and climbing.