What I liked:
- Simple and effective concept around Swiss army knife (already saw in this jam but not like this)
- Readability. Colors are well used.
- Particles on knife.
- Puzzle designs are just what it need to discover the game.
- Good SFX, Ambient sounds and spatialized.
What could be improved :
- Not sure we need to rotate the knife as we want. Just 90° rotation will be enough.
- Some subtle music perhaps
- 0 key far from the other tools keys, I think that just hit again the 1 to close the knife for instance, or if you make 90° rotation, closed state could be a possible rotation.
Hope it helps.
Overall, that was fun too play, polished enough. Great game.