Micro-transactions

[Zirak]

LotRO has a pretty decent model going for content. I did the F2P thing there for a while. At the time I was able to play up to level 20 and barely noticed that I was not on a paid subscription. The only real limit that hit me was the cash limit - I could only carry a certain amount of cash but could pay to increase it. Once I hit level 20 I began to run into quests that I could not get because I was not a paying subscriber. You could pay for different zone quest packs to open up further adventuring. I could have continued to level up without the quest packs. They also limited your ability to travel the world with certain horse routes and quick travel options only available to paid subscribers or as micro transactions.

I also like how they kind of sucked you in - gaining achievements through world exploration and killing stuff garnered small amounts of store points so I was actually able to extend my F2P experience a little bit without paying anything but those little increases made me want more and led to me actually paying for more store points.