Belle Enchanted Mirrors is an interesting game and I believe it's also a clone of the I Love Lucy slot, where you win by landing winning paylines although the real fun is with one of the special features!
The Enchanted Mirrors Feature is triggered by landing a Full Stack of mirror symbols on reel 1 after which a wheel will spin to determine the symbol that will be used to replace all mirror symbols. Randomly, a Multiplier wheel and Respins wheel may also spin, too, and if they do any win will be multiplied by your awarded multiplier at the conclusion of the feature. If you are awarded Respins, all replacement symbols will be held as all reels are respun in an attempt to improve your win with the goal to Fill the Screen!
The Belle Pick Bonus is triggered by landing bonus symbols on reels 1, 3 and 5 after which you choose symbols to reveal Belle or the Beast. The goal is to keep choosing the same symbol to form a streak and as you do, you are awarded increasing bonuses all the way to 50x! To help, you may also find Wild symbols which guarantee your streak continues. The bonus ends after 3 streaks end, Enjoy!