小校園, also known as Little Campus, is a online learning platform for students to learn new knowledge while enjoying interactive games. It is quite a popular platform for Hong Kong students, including me when I was younger. However, the game updated into a newer interface, and the old version of the game isn't accessible by normal means due to the fall of Flash. Luckily, Internet Archive has stored many of the pages, while some are broken, some are still functional and even playable!

While there are multiple sections in Little Campus, the one most people (and me) remember the most is 學習大樓 (Study Building), which is a tall building with 7 floors, each floor representing a subject student often learn at school. There are plenty of information to learn and games to play, I spent hours playing there!