Machine Learning with Fun

Google Research hosts a number of very interesting so-called A.I. experiments, which let you play with machine learning algorithms in a very amusing way, e.g. Quick Draw, where a neural network learns to recognize hand drawn sketches (called doodles), see:

https://quickdraw.withgoogle.com

which is part of the A.I. Experiments platform:

https://aiexperiments.withgoogle.com

and here the explanatory video:
https://www.youtube.com/watch?v=oOwfiYnRi5c