Jon Ripley's Brainfuck Lost Kingdom running in your browser.
I picked up jquery.terminal a copy of the brainfuck program LostKingdom. Then using my nice little BF->asm.js converter I generated a 5MB javascript file and promptly crashed Firefox.
With a bit of bashing and turning off of the "use asm" flag it now seems to work nicely.
http://rdebath.github.io/LostKingdom
This is how bf.js was generated, it also runs with node.
bf2asmjs -b LostKng.b > tmp.js
yui-compressor --nomunge --line-break 80 tmp.js -o bf.js
rm tmp.js
node bf.js