Complex sentence: The "Gals Panic" games are variants of the classic puzzle game "Qix": the objective is to uncover the silhouette portion of background with a marker until at least 80% of the silhouette is uncovered.
Split into simpler sentences: The "Gals Panic" games are variants of the classic puzzle game "Qix". The objective is to uncover the silhouette portion of background with a marker until at least 80% of the silhouette is uncovered.