The Atari2600 PlusCart+ is a third-party peripheral that gives the Atari2600 internet connectivity. Game ROMs with PlusCart+ functionality are called PlusROM.

Gopher2600 will automatically determine when a PlusROM is loaded.

The very first time you load a PlusROM cartridge you will be asked for a username. This username along with the automatically generated ID, will be used to identify you on the PlusROM server (different ROMs can have different servers.)

PlusROM can be rewound but cannot be rewound backwards past a network event boundary. This to prevent the re-transmission of already sent network data.