Facebook integration isn't exactly a new thing for MMOs these days, but it's not often that you can use it to outright pay less money for a subscription. But that's what Mortal Online is experimenting with, offering players of the game a discount based upon their friend counts. Of course, there's a slight catch -- said friends can't themselves be players. The integrated application will also announce your major achievements to your friends, making it a clear method for players to show off the game they're enjoying and give it a bit of advertising to boot.
The discounts, naturally, are a nice incentive. A maximum of 1.25 EUR will be deducted from the subscription price if you have 750 non-playing friends, but even five non-playing friends will net you a 0.25 EUR reduction. The discount begins to apply 12 days after you link your account, meaning that new players to the game can enjoy the discount right from the start. It's money off and a chance to show off what you've accomplished, and that should be enough to win over almost any Mortal Online player with a Facebook account.