Arrows / WSAD Move your smiley up, down, left & right;
G Toggle god mode;
0-9 Select corresponding brick in quick brick panel;
Hold ALT/ CTRL /Shift Temporarily select the first brick in the quick brick panel;
Hold TAB Show all bricks;
M Toggle moderator mode (Only for Admins and Moderators)
Use the mouse to draw bricks whenever such is possible.