An artist called Rafaël Rozendaal has a series of websites which create simple, self-contained online worlds...net-scapes, if you will. Many of them are interactive and surprisingly engaging. His bio says he 'makes websites as art pieces'. Some people will no doubt roll their eyes at this notion but his websites have a nice of way of requiring the viewer to figure out how to engage with the creation -- you can manipulate and animate the graphics by moving the cursor, clicking, double-clicking, dragging, tilting your head, squinting, and sometimes by simply waiting. At times -- as is the case with hotdoom (bottom right) -- you feel as though you must not have any control over the scene ... until you realize you do. Some pieces feel cinematic, some feel like games, some like moving paintings, and others feel like a waste of time. Overall, though, they are cool experiments in interactive online artistry. His work has been circulating for several years now (he's snatched up some great domain names in that time as well), but it remains engaging. Here are a few to get started with: