"Left 4k Dead was made by Markus Persson, for the 2009 Java 4k Competition. The entire game is less than 4kb." Impressive, and even a bit fun.

"The technology will probably improve, but in lieu of the promised emergent web AI, we need to build more small tools, more games to bootstrap datasets, and more simple ways of encouraging people to play their part in the semantic web without ever having to explain what it is." tt++.