Black + Black = White Rotate and blend cards with XOR rule: "Black + Black = White". Oberty gives you a few tiles with simple geometric shapes, choose some, rotate and combine tiles to reach target shape. Oberty is a minimalist shape-blending puzzle. 200+ puzzles to complete Relaxing Minimal Monochromatic Atmospheric original soundtrack Inclusive color schemes for people with visual impairment Level editor, create and share you cards with friends LEVEL EDITOR Create your own unique level-card.
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