Hi everyone! We've found there's a game-breaking bug with the cubes and save system. This can happen if you stop the game while holding a cube, on game reload the cube is gone and you can't move forward with finishing the puzzles. We're looking into this and will push a fix soon!

The only way to go around it right now is to start a fresh game you can do this by deleting the save files in the app data.
You can find that here: C:\Users\<YOUR USERNAME>\AppData\Local\Path_of_Kami

If you have any trouble let us know!