I was intrigued by this 14K JavaScript Super Mario Brothers demo. It requires no external image or sound files; everything it needs is included within the single 14K JavaScript file.

I’ve seen many Flash-based and Java-based games (and even written a few), but I’ve never seen a JavaScript-only action game. But a quick search shows that there are many other examples. For instance, Breakout4K is a 4K Breakout clone. Another example is 3D TOMB 2, a 4K DOOM-like game. None of these games are going to challenge the Xbox or the PlayStation, but I am always impressed by what is possible using limited resources.