This is just an engine I made following the basic Scratch ideas of a painting game. Move your mouse across the screen to draw. Press space to change the color a little, press A to make the paint bigger, and D to make it smaller. Pressing S will change the shade, which looks really cool, actually. Feel free to remix and make this something bigger, or just spend a casual afternoon relaxing and playing this engine.
Thanks to 9dots for the idea, other than that, this is 100% me. Go ahead and remix this so you can change it to fit your style! :)