This is the starting concept for a Blinks application. Right now it only has one object that can be placed in the world: drippers to create water.
Water will flow from tile to tile. Right now, gravity is restricted to fall from face 0 (top when reading the back sticker) to face 3 (bottom when reading the back sticker).
Eventually it'd be cool to have other things to add/do in the terrarium, but I'm already running out of space on the tile so I don't think I'll add much more.
Click the tile to toggle it between a blank/empty tile and a "dripper" tile. You will know it's a dripper when you see a pulsing light blue face. That is where the water comes from. Connect other tiles below it and watch as the water falls between tiles.
Click a tile to clear it (click again if you don't want it to be a dripper).