mirrorflip
every mirror flips after it hits
how to play
The arrow tile launches a ball in that direction. It flies straight until it hits a mirror you placed, turns, and keeps going. Click an empty tile to place /, click again for \, again to remove it.
The twist: after a mirror turns the ball, it flips to the other orientation. A ball that comes back to the same mirror turns the other way. The trail shows the whole flight with that applied.
Collect every star * and reach T. Hitting a wall or leaving the grid ends the flight. Score is mirrors used. Par is the fewest possible, checked by trying every placement.