Righto, I get it fires my attack back at me and should destroy my monster.

How come it can destroy multiple monsters?

eg what just happened to me:

atk:1700 onto a def:500
mirrored

the 1700 is destroyed along with my 3200, 3000 and 1500 monster.

I would understand if the attack was higher then my monsters attack but it was considerably lower. Maybe they tried to emulate the show a little to hard on this one.

Is that not totally overpowered for a trap card?

The card effects in the game mirror those of the actual Trading Card Game than the anime. In the TCG, Mirror Force's effect destroys all face-up attack monsters the opponent has on the field when it's activated, regardless of their attack power. Because of this, it behaves the same way in the video game.

Yes, it's overpowered. That's why it's restricted to one copy per deck.

Fairly silly that say a kuribo can destroy a blue eyes with this trap.

Yeah I just lost a game by that card so I needed to vent and see if I was the only one who thought it was not an overpowered card (with not much logic behind it).