Think Craft

WASD - moving

Space - fly up

Left Shift - fly down

right click - drop the grass block

F1 + right click - drop the dirt

F2 + right click - drop the full of grass block

F3 + right click - drop the cobblestone block 

F4 + right click - drop the mossy cobblestone block

F5 + right click - drop the golden block

F6 + right click - drop the obsidian block
F7 + right click - drop the iron block

F8 + right click - drop the brick block
F9 + right click - drop the bedrock block

F11 + right click - drop the emerald block

New Update!! Better Multiplayer System (not tested)

Create - Create a servers and give a name

Join - join a named servers