More than 200,000 magnetic building toys have been recalled after two children who swallowed magnets required surgery, according to federal regulators.

About 213,500 Goody King Magnetic Building Cubes and Blocks sets are affected by the recall, the U.S. Consumer Product Safety Commission announced Thursday.

The building cubes can break or open, allowing the magnets inside to come loose and creating an ingestion hazard for children that could even lead to death. The recall underscores a long-running safety concern with powerful magnets in children’s products, which can pose serious internal injury risks if swallowed and are closely watched by regulators because the hazard is not always visible until after ingestion.

"When high-powered magnets are swallowed, the ingested magnets can attract each other, or other metal objects, and become lodged in the digestive system. This can result in perforations, twisting, and/or blockage of the intestines, blood poisoning and death," the commission said.

Importer Yi Suen Commerce is aware of two children who ingested magnets from the cubes and needed surgery to remove them.

The company also knows of at least 27 reports of the cubes breaking or opening, causing the magnets to become loose and accessible to children.

Consumers are urged to stop using the recalled magnetic building cubes immediately and contact Yi Suen Commerce for a full refund.

The cubes contain small, powerful magnets that allow the pieces to stick together and create 3D designs. The toy sets are sold in various themed designs and colors, including forests, dinosaurs and unicorns.

The toys were sold online at Amazon from January 2024 through July 2026 for between $17 and $50 in sets of 45, 56, 100, 120, 150 and 300.