Nine beaches in Sydney were shut down for visitors on Tuesday after mysterious white and grey marble-sized balls washed up ashore, disrupting the summer holiday season. Popular beaches like Manly ...

The online game Marble Clash is a billiard-style puzzle. You need to send each colored ball into the hole using a white ball. The ball can only move at right angles. The game consists of many small ...

Months after mysterious black balls forced the closure of some of Sydney's most famous beaches, small marble-like debris has begun washing up on the city's shores again. The balls - this time grey ...

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