[mootothemax]

Firstly, gambling is illegal for minors.

You think making something illegal stops it from ever occurring?

Secondly, have you ever seen slot machines?

Honestly, no, although I've seen fruit machines in pubs, which I presume operate on the same principle; lots of flashing lights and characterization.

I would be extremely surprised to see something branded like the FarmVille page.

[joosters]

The one thing to be said of online casinos is that they offer good protection against underage gamblers. Unlike a fruit machine in a pub, you can't just wander by and anonymously put money in. The payment systems generally prevent registering/depositing by under-18s. And even the Gibraltar gambling commission (of which Zynga falls under) is very strict about preventing minors from playing.

[nkohari]

In Las Vegas, there are slot machines with all sorts of cartoons (Disney characters, etc). But if you look under 18, and you walk up and touch them, security is going to appear out of nowhere and ask you to leave.

[Pkeod]

There are PopCap themed slot machines already. Their characters are just as "kid friendly" in the sense that they are simple and stylized, but again PopCap's products are for adults and not kids.