I bought a game on HRKgames and I get "a mistery key".
So enjoy it.

Game description:
Atlantis: Pearls of the Deep is an award winning physics-based, Match-3 puzzler. Drop colorful orbs and let gravity do the rest, as the pearls crash and clink their way through ramps, platforms, and spinning gears. Match 3 or more pearls of the same color and watch them disappear while surrounding pearls fill the void! Earn Achievements and Stars depending on how fast and efficiently you clear the screen, then use those Stars to purchase awesome and explosive power-ups! Play through 100+ regular levels to unlock the bonus levels for extra challenge!