SharkWire Online is a specialized GameShark device with a serial port and modem added, accompanied by a now-defunct dialup Internet portal service.

[4]: 19  The company considered the possibility of eventually supporting online multiplayer gaming, and opening up access to the wider Internet beyond their proprietary portal.

The accompanying dialup service was intended as a safely proxied and customized Internet access method for children aged 7 to 14 years.

These partners included Fox Sports, Electronics Boutique,[9] GamePro, Prima, Eidos, Capcom USA, Jones Soda, Airwalk, UPN, and Arnette Sunglasses.

While subsequent GameSharks were released for the N64, the SharkWire Online cartridge was not updated, and more Nintendo 64 games were produced that it is unable to unlock and play with.