Zwei!! contains various in-game items that serve to unlock mini-games and accessories. A shooting game entitled Zwei!! Shooting is accessed from within the game; the others can be launched from the desktop when the main game is closed. One of these, Pet Monitor, is obtained automatically and allows the player to make choices within an adventure-like environment, which may increase the pet's level and reward items in the main game. Other two mini-games are the typing tutor Typing with Ys, starring characters and themes from Ys games, and the puzzle game Mona Mona. Accessories include a calendar, a clock, and a calculator.

Contributed by Unicorn Lynx (181375) on Jul 13, 2012. -- edit trivia