Hamtaro: Ham-Hams Unite!

Hamtaro: Ham-Hams Unite! (とっとこハム太郎2 ハムちゃんず大集合でちゅ) is a Hamtaro adventure video game developed by Shogakukan and published by Nintendo for the Game Boy Color handheld video game console. It was first released in Japan on April 21, 2001, and was later released in North America on October 28, 2002, and in Europe on January 10, 2003. It was the last game officially released for the Game Boy Color in Europe.

Summary
As 'Hamtaro' enters the Clubhouse, Boss is in need of help. He asks you for a name and once you give him it, he tells you that he needs all the ham-hams back at the Clubhouse. Before you are to go out and look for them, he teaches you four basic Ham-Chat words, and scribbles down some others.

You are then sent on your merry way in search of the hamsters. You are able to explore several locations in which two to three ham-hams are in. One location is Acorn Shrine in which you find Bijou and Maxwell. The other locations have two Ham-Hams each as well. The Sunflower Park has Pashmina and Oxnard; the Ruins has Cappy and Penelope; the Sunflower Market has Howdy and Dexter. You can find Sandy and Stan at the Sky Garden; and Jingle and Panda at the Sunflower Elementary.

Once all the ham-hams are found, Boss shows everyone what he was doing. He had built a Ham-Jam-Room for everyone to dance in.

Ham-Hams
Hamtaro, is a mild orange and white hamster who is always looking for an adventure. There are other Ham-Hams throughout the game. In the clubhouse, you can find Boss, a large ham and leader of the Ham-Hams and the advice-filled Snoozer, the sleeping ham. As game play progresses, you will find Bijou, Maxwell the so-called bookworm of the bunch, the seed-loving ham, Oxnard, Pashmina, the scarf-lover and the sister-figure to the baby ham, Penelope. There are many others including the cap-loving ham, Cappy, the hard-worker, Panda, the guitar-playing field ham, Jingle, the rivaling lovers for Pashmina, Dexter and Howdy, and the brother and sister, Stan and Sandy.

Other animals
During gameplay, you come across several animals other than the hamsters. You come across a dog given the name Taro, a crow whom you later become friends with, a weather Frog, several moles, doves, a Snake and a Monkey. Other animals include a cricket given the name Tricket.

The ham-hams can be hard to get, considering certain things trigger certain emotions that is unique to each ham. At the beginning of the game, a hamster named Boss says he needs you to bring (or rather bribe or convince in some cases) back to the "clubhouse". He mentions "ham-chat" and teaches it to you before you head off. He gives you a notebook to write it all in, and teaches you a few simple "ham-chat" words.