Add a rechargeable flag item that allows setting up a tile for "defusal". Once you set up a tile, your flag is unavailable until the defusal is finished. Defusing a tile opens it, places a flag on top, and starts a countdown. At the end of the countdown, the contents of the tile are revealed and you get a drop (see table below). If the flag gets destroyed during the countdown, you lose points, the flag explodes, and reveals its contents (in this exact order).
Add a rechargeable flag item that allows setting up a tile for "defusal". Once you set up a tile, your flag is unavailable until the defusal is finished. Defusing a tile opens it, places a flag on top, and starts a countdown. At the end of the countdown, the contents of the tile are revealed and you get a drop (see table below). If the flag gets destroyed during the countdown, you lose points, the flag explodes, and reveals its contents (in this exact order).