Square Brush

Controls:

1-5 selects color

6-0 selects fill pattern

-/= sets brush size

z draws

x erases

h toggles UI

e toggles fullscreen to prep your drawing for export (make sure the cursor is off screen or it will be visible)

f6 to export your drawing

Have fun and tag me with #squarebrush so I can see what cool things you make :]