Nintendogs is a video game released in 2005 for the Nintendo DS portable gaming system. In it, players adopt and care for dogs, which they can interact with by touching the screen and using the microphone to interact with the game, doing such things as using your voice to speak to your Nintendogs. The game was released under three different versions, for both Japan and the USA/Europe, and each of these three versions has a different selection of dogs available to the player. The game was originally developed and demonstrated as a concept for the Nintendo 64, but was never released on that platform. Instead, it was reworked to take advantage of the DS's touch screen to provide a more tactile game.