Contrary to other comments I have read on this submission, I believe the game is not difficult. Howver, in my personal experience I encountered many game breaking bugs which forced me to restart the game in its entirety. This was unfortunate, yet I did give many chances to ensure I could see as much as possible before giving up on replaying the first levels on repeat to reach my previous point of progression.
From what I could ascertain, there is no way to deselect blocks once held (perhaps this was bugged). There were times where nothing could be placed and a reset was necessary. I also struggled with moving the camera if a block was selected. I think this issue stems partly from the fact that the controls are extremely limited and partly from the settings/controls menu being inaccessible.
My biggest issue with this game is how the disconnected title screen/menu covers both sides of the screen, at many times, hindering player ability to access vital information due to lack of vision. Perhaps, a solution for this issue would be to make the title screen completely disappear, and alow players to retrieve the menu from its minimised position. Not only does the menu interfere with visibility of the game, it's actually designed in a way that interferes with the gameplay by providing a "play" button that would reset the game and clashes with the existence of the "done" button in the bottom right corner. Consider how 'front-and-centre' the (essentially) useless "play" button is compared to the far more vital "done" button.