What's even harder than doubler mines? Halver mines! Your goal is to dig up every space except for the mines. Use flags to mark where you think mines are. Numbers tell you how many mines are around it, including diagonals. Click to dig, space to flag. Space cycles between all the different flag types and then back to no flag. Arrow keys to move the board around (this can also be done with the buttons in the top right). In this version there are regular mines, double mines which count for 2, triple mines which count for 3, anti mines which count for -1, magnetic mines, doubler mines which multiplies count by 2, inverse doubler mines which multiplies count by -2, and halver mines, which divides count by 2.
Credits to @lionheart921