SoundViz - Turn music and sounds into beautiful art
skribbl - Word guessing based on drawing.
XO by XLN Audio - A revolutionary new way of visualizing drum plugin libraries
LetsDraw.It - Guess and Draw, Drawing Battle, Pictionary, Copy picture - online drawing games where you can compare your skill with others.
Emoji Party - An audio visual interactive emoji experience.
gartic.io - Draw, guess, and win!