Apparatus will remind players of Playstation game Little Big Planet. The objective: get the silver ball into the blue bucket. You're given a number of pieces to play around with, like boards to fasten to each other or weights to create catapults. Pieces can be placed on one of three layers, allowing fasteners to work their magic.
Fastening pieces comes in one of two varieties: nails are "hard" connectors, giving a rigid connection. Screws, however, allow pieces to rotate independently of what they're connected to. Combining screws, circular plates and the game's engine capabilities, you can make pistons, engines and whatever else your mind comes up with.