Four chat rooms (A, B, C & D) are available at one time, each with a capacity of sixteen people, for a maximum of sixty-four people in total of all the chat rooms.
Picto Chat is preloaded onto all Nintendo DS, Nintendo DS Lite, Nintendo DSi, and Nintendo DSi XL units worldwide.
In addition to writing text, players can also include images from an SD card in the body of messages, as well as attaching a Mii to the message.
Announcements of software updates and video game news are posted by Nintendo.
On the DSi versions of Picto Chat, a rainbow pen can be used by tapping on the pen icon again once it has been selected.