Green Crystal Mines

The goal of the game is to complete all 12 levels, collecting green crystals on each level and avoiding dangerous mine-strewn cells. Each level becomes more difficult than the previous one, with more crystals and mines, and fewer safe cells.
On each level, you unlock cells on the board. These cells can contain green crystals, which award points and are safe, or mines, which end the level instantly. A level is completed when all the crystals are collected. If you hit a mine, you can replay the level; points are only saved for the crystals you've collected.