This summer, Dungeons & Dragons Online will go where no other subscriptions MMO has gone before it. The launch of Dungeons & Dragons Online Unlimited makes D&DO free to play, but adds micro-transactions to the mix. Players will be able to choose to pay a subscription fee and access all content, or pay-as-they go by dropping small amounts of loot for content they want. Crispy Gamer sat down with Turbine and got the inside scoop on how the micro-transactions are going to work in-game, and the game's interesting "guest pass" concept.

"The store integration should feel pretty familiar if you’ve used pretty much any ecommerce site on the web — like Amazon.com, etc. We modeled it after some of the best-of-breed sites out there while adapting it to the specific needs of the game interface," explained executive producer Fernando Paiz.

"In your normal gameplay, you’re going to encounter the store — and you don’t have to use it. Another way we could have gotten in here was that I could have bought a guest pass for you — since I’m a subscriber," Paiz said. "Subscribers are people who have purchased content before, and will have the ability to buy a guest pass — essentially a 90-minute pass to a certain piece of content — and bring their friends along."

For more details on Dungeons and Dragons Online Unlimited, check out the entire interview!

What model do you think will win the hearts, minds and money of MMO gamers: Subscription, micro-transactions or some combination thereof?