Your browser doesn't support HTML5. That ages it to around the time of the lunar lander, which is very appropriate, but unfortunately not suitable for playing this game. Achievement unlocked: The Moral Victory.

Ever wanted to fly a lunar lander along the ZAR/USD exchange rate? Now you can!

Financial data from fixer.io, which is pretty neat. Everything else done in vanilla ECMAScript, which was better and worse than expected.

Feel free to tweak things - source code available on GitHub