The Nintendo DS is a handheld console released by Nintendo. Originally released in 2004, Nintendo released a hardware update named the DS Lite in 2006. The Guitar Hero On Tour series were the first Nintendo DS Guitar Hero games made followed by Band Hero. The "Drum Skin" and Microphone became available when Band Hero was released. In 2008, Nintendo released the Nintendo DSi. Due to lack of a second cartridge slot, all Guitar Hero DS games became incompatible with the Nintendo DSi, Nintendo DSi XL, and the Nintendo 3DS line.