Genetic Algorithm 2D Car Thingy
This is a very beautiful illustration of a woefully outdated algorithm.  Its proportional selection operator was superseded in 1994 (at the latest) when Bäck published his comparison of selection operators.  Its approach to crossover looks like an ad-hoc extension of binary crossover, which Deb improved on in the same year.  It's using uniform mutation, although better options have been demonstrated by Evolution Strategies since the '70s, if not earlier.<p>But it's really fun to watch.  I'll give it that.