Okay, it's a shameless plug, but I really have to mention my game site here. I'm General Manager of Online Community, and these games have been my babies for over 10 years. I'm proud of them. :)
If you want to play any of them, we've got a 30-day free trial. The amount of information that we ask for from users varies depending on a marketing program that we're experimenting with. Some users are asked for a credit card right away, and others can get in for a free trial with nothing more than a valid Email address.
It's kind of random as to which visitors get the offer, so if you want to be sure to get the "no credit card" signup option, use this "Elonka" link I set up for personal friends, to ensure they can get the 30-day free trial of our flagship product, GemStone III, as easily as possible: