Seems like I forgot to read, instructions were further down. :) 
It bugged a bit for me sometimes, showing a wall instead of a mine when i hit the button for mine for instance. In addition it felt like it placed the items a bit off some times, since it was grid based. It would benefit from highlighting the tile an item would be placed in.
Nice voice acting and music. I can see the potential of the gameplay, but due to the interaction issues I had it was hard to play it properly.