The Cargo

You're running a crane in The Cargo, picking up shipping crates and setting them onto a truck without letting anything topple or overhang the edge, then getting that truck to the warehouse before time runs out. It's a physics-and-timing puzzle more than a thinking one - stacking is finicky, and a badly placed crate near the end of a load can undo the whole thing. Later stages add obstacles the crane has to work around, which is where the timer starts to actually bite.