Arrow keys, click to place/destroy. Dig/build: 1: Dig, 2: Build. So far, you can only dig/collect dirt/wood and place it again. In building, click 1/2 to switch between wood/dirt.
Credit to @cobraguy for the platforming script. v0.8: Added darkness, added the beginnings of a zombie. v0.7: Fixed glitch, now can collect leaves. v0.6: Fixed glitch, added cloning mini brick. v0.5: Fixed Lots of major glitches, added range. Added placing wood. v0.4: Fixed glitch, added getting wood, now you can see how much of each stuff. v0.3: Fixed glitch. v0.2: Added tree, fixed glitch, added bedrock. v0.1: Official release.