This is certainly turning into a booming segment. The latest is Microsoft’s Popfly for Silverlight, which has been out for a while but didn’t have any game stuff. But now there’s Popfly Game Creator.

Today we’re adding something special to Popfly: an early version of our Popfly Game Creator. That’s right: Popfly is about more than mashups and web pages. It’s about making it fun to build things and share them with your friends. And one of the things we’ve heard loud and clear is that games are the kinds of things that people would like to try to build.

What kinds of games can you create? Just about any kind of two-dimensional game, a category that includes things like the original Super Mario™, Frogger™, Asteroids™, and a host of other old arcade games. To make it easy, Popfly is still focused on getting as much done as possible without having to write any code. The game creator has over 15 pre-built game templates for you to try, hundreds of images, animations, backgrounds, and sounds for you to use in the games you create, and, of course, a way for you to write code if you reach the limits of what the user interface can do for you. Since this is Popfly, you can still save, share, and embed your creations everywhere from your blog to your Facebook page to your Windows Vista Sidebar.

Just in the last few months we’ve seen this, and Gamebrix, and Sims Carnival…