The Mega Man Zero Collection is the ultimate collection of the single player, 2D platformer Mega Man Zero games. Designed to please both new and longtime fans of the series, the collection contains all four Mega Man Zero games, collected together on one Nintendo DS game cartridge. Together for the first time, this collection is the first opportunity DS player have had to play these classic games without the use of the GameBoy Advance (GBA) cartridge slot, and is the only opportunity DSi players have had to date.