Some Nintendo 64 games offered optional features that required peripheral hardware, such as the Rumble Pak for force feedback and the Controller Pak for additional data storage. Because these peripherals are not emulated or simulated in the Wii Virtual Console, the games played on the Virtual Console as they would on the Nintendo 64 without the peripherals attached. In particular, "Mario Kart 64" cannot save "Ghost Data" since no Controller Pak is available, "Cruis'n USA" still allows saving game data but data cannot be copied to a Controller Pak. "Wave Race 64" still has the ability to save progress but like "Cruis'n USA" the copy ability that allowed data to be copied to the Controller Pak cannot be used. Similarly, both games "Mario Golf" and "Mario Tennis" cannot use a Transfer Pak to copy data to or from a real Game Boy Color or the 3DS Virtual Console running the respective companion game.