Click a border position to fire a laser, which will be reflected by the mirrors. A counter on the top right will show the number of mirrors you have hit. The number at the top left corner shows how many you have to hit to win. After each move, click the border again (anywhere) to switch the laser off.

The first mirror which has been hit will change its orientation when you turn off the laser. (In some variants all hit mirrors will change orientation.) This gives a different board setup with every shot. You might have to shoot many times and from many different border positions to achieve the maximum hit count. The number of shots you need is of no relevance.

Solutions are attached (menu option HELP/SHOW SOLUTION). All solutions have been found by hand, so you might be able to improve on them.

In the random variants you try to hit as many mirrors as possible. When you reached a good score, start again with the same setup and try to beat your score or ask your friends to beat it.

Variants 1-10: fixed setup; only the first mirror hit by the laser flips.
Variants 11-20: fixed setup; every mirror which has been hit will flip. These latter variants are more difficult because more changes happen after each move.
Random Variants: First click the board to drop mirrors randomly.

 
The name 'Flim' is an abbreviation of 'flipping mirrors'.

More freeware and real puzzles and games at my homepage: karl.kiwi.gen.nz.