How many levels do the games on the VTech Kidizoom Camera Pix have?

For Christmas this past year, a small member of my household received the gift of a VTech Kidizoom® Camera Pix^TM. It did not take any of us long to discover that this comes loaded with several games:

• Bunny Jump
• Train Track Stack
• Where's the UFO?
• Worm Maze

We quickly started leveling up. But where does it all end? We have not beaten any of the games yet, and are wondering exactly how much of a time commitment these require.

Exactly how many levels do each of these games have?

Nothing is mentioned about any of this in the product manual.
The only version information I can find on the software is "VTech 1936".