Puzzle Moppet is a 3D puzzle game inspired by Sokoban-style puzzles -- puzzles where you push blocks in a maze to traverse it, but cannot pull them, so solving the puzzle requires careful planning and spatial reasoning.
Adding the third dimension makes a big difference, however, since it considerably increases the complexity of possible puzzles. Additionally, new elements are added over the course of the game; ice blocks that slide infinitely until stopped by an obstacle, levitators that lift boxes up to a predefined level, elevators to allow your character (the eponymous moppet) to move between levels, and so on.
It's a well conceived and executed little puzzle game; not beautiful, lacking in music and with a very sparse soundscape, but visually interesting in its sparseness. The demo contains a handful of puzzles and the full game 30; I'm not sure that's sufficient to justify its $15 price, but certainly the demo is worth checking out, and its possible you'll like the game enough to disagree with me on that point.