Use the arrow keys. The rest is in the game. Try to find the Easter eggs! Update: For some reason after the major scratch update the game has gotten super glitchy and practically unplayable, so yeah. Go try something else.
I had help from @N777, @18KwokJ, and @Griffpatch on the platformer (the blue thingy). The rest was my own. Expect a few glitches. When I remixed @N777's platformer, it was only a ball. It is pretty great now. The word 'Veshloaf' came from @Catvy. The thumbnail/start page is by @TheRedPixel506. All references to minecraft belong to Mojang.