ECDP: eCrew Development Program

eCDP: eCrew Development Program is the name of a Nintendo DS video game used for training purposes by McDonald's Restaurants in Japan. This version of the game appears to be targeted at new employeers, with eSTART apparently being used for training existing workers. While the game functions on a Nintendo DS or Nintend DS Lite, the games were apparently supposed to be played on specifically McDonald's-branded Nintendo DSi LL consoles.

Access to the game is blocked via entering a serial code. First, the game will ask you for a Store Number; second, it will ask you for a Store Management ID. These are each composed of six digits, but can be entirely fictional. The game's serial code is based on these two numbers, plus the MAC address from the Nintendo DS/DSi playing the game. Once inside, you need to register a Manager ID and a password for future uses. Those using emulators need to load up a specific save file to bypass the serial check.

History
The game was thought to have been lost for most of the 2010s, until it was bought by a private collector in 2020, who then dumped the ROM contents to the Internet Archive; a community then sprang up to put together a localization patcher to translate some of the text into English, while others play the game for fun.