Catz (Game Boy Advance)

Catz is one of the many games in Ubisoft's Petz series. This one in particular is known for the title screen music featuring a symphony of meowing cats.

Unused Speaking Frames
All of the characters in the game have frames of each of them speaking. However, in the actual game, it only shows a still portrait of their face, meaning these frames go unused.

"Debug" Graphic


Present in the tiles for the living room is "Debug", in an odd font.

Sleep
In the mornings, the Sleep option is grayed out. Forcing the game to select it during the morning displays this otherwise-unused text: It's too early to go to bed...