It could be fun...
... but it didn't seem to work properly with my mac running os x 10.4 and using Safari. You can click all day on the cauldrons and nothing happens while ninjas climb up and take the flag.
I also accidently discovered that if you right click and select play, it ends the level and gives you full points for that level and then goes to the next level. You can keep doing that and get a high score as well.
The screen size should also be downsized for easier viewing.
I wish it worked for me, it looks like it's fun!