It sought to be a PDA for kids, so it incorporated both gaming and organizer software.
I'm playing on a Windows 7 computer, on Firefox, if that helps.
[I just loaded the page in Windows 7, Firefox 8.0, 9.0.1, and 10.0, and the game loaded and played every time without fail.
It also included a very novel feature at the time: wireless connectivity.
Cybiko units could send each other text-based messages, share software, and play games via a built-in radio transmitter.