I am a huge fan of Portal and Portal 2. Right now, until May 10th, you can get Portal 2 for $6.74, 66% off the regular price. Anyhow, I just made my first level for the game using their new Perpetual Testing Initiative. It is the first Portal 2 level I’ve ever attempted to build. I spent less than an hour building it (probably closer to 30 minutes) and about an hour tweaking it. It is a very easy puzzle, but I think mildly fun and not bad considering I’ve never done anything like it before… well that isn’t completely true, I made some Descent levels eons ago…

The editor is fairly basic and easy to use and I think it is capable of fairly nice maps on its own, though to get the full detail you need to use the Hammer editor, but for most of us I think the new editor is more than enough, especially as they add more textures and options to it.