game, game, game and again game
For an original and utterly weird interactive experience, check out 'game, game, game and again game' by Jason Nelson, who calls it "a digital poem/game/net artwork hybrid of sorts."
There are 13 curious levels filled with poetics, hand drawn creatures, scribbles, backgrounds and other poorly made bits. The theme (cringe) hovers around our many failed/error filled/compelling belief systems, from consumerism to monotheism.
Compared to some other net art out there, which often suffers from randomness, it's interesting how much a goal, or even the suggestion of one, helps to draw viewers/users into the experience. In 'game, game...' familiar computer game goals like getting your character from a to b are used purely as 'seductions' to explore a poetic and completely unpredictable universe.
As you figure out how to get through the different levels, keep in mind the game's initial message, "belief systems are small clumsy rolling-type creatures" (which describes your game character, i.e. you are a belief system), and interpret your adventures accordingly.
(Via collision detection, who views this as a surrealist game, "where cause and effect [have] only a very inscrutable relationship to one another.")