Very Mine-sweeper-y. Looks good, but needs to be cleaned up visually, and interface wise. In a tile-based game like this, I would suggest either using a top-down view or creating a rotate view feature. Also, use picture icons instead of slashes on the "mark" feature.
 "LaserBox"){kind=icon}
 "Spewer"){kind=icon}
 "Electric Box"){kind=icon}