It seems that mobile connectivity to virtual worlds is right on the horizon. But what about a virtual world actually self-contained in a mobile phone? At the 2007 Virtual Worlds Conference, Ironstar Helsinki CEO Joakim Achren demonstrated and discussed MoiPal, his company's mobile virtual world that works on basic Java handsets.

"The idea was like, your friend in the phone," Achren said. "It’s an avatar that lives in your cellphone." The mobile pal is controlled like a Sim, or a Tamagotchi. Achren explained that he got the idea from thinking of how adults have facebook and kids and 'tweens have Club Penguin -- but what about teens?

"They are usually not at home, but they always have a mobile phone with them," Achren noted. "And they usually have the best phones. It is a means of self-expression, like ringtones. But self expression should be more than just ringtones."

Achren did say that, as it happens only during idle time, gaming and social networking on a mobile platform still have to integrate with a website, especially since mobile phones have such restrictive memory. "Concentrate on using the mobile to do something simple and realistic," he advised. "You can’t just take Second Life and put it on a mobile -- except for Japan, maybe,” he joked.

“It has to be a personality extension... and it has to be free,” Achren continued, noting it's not generally a good idea to aim a subscription-based service to kids, since they probably won't even try it. Incentivizing free content is a much better method, he said.

Moreover, there are a lot of possibilities for the mobile platform. Achren highlights simple 2 or 3-dimensional content items that can be created on a phone without challenging the memory restrictions. There's also social networking. "You’ve seen Facebook on a mobile. It works pretty well," Achren said.

More here