Zappy

Zappy gives you a robot, a box and somewhere the box has to end up. The levels are laid out in flat 2D, and most of them are less about reaching the exit than about working out the order to do things in, because the box is both your cargo and your problem.

You can put it down and pick it up again, and that single ability is what the puzzles are built on. Carrying it through a stretch full of traps may be impossible, but leaving it somewhere safe, clearing the path and coming back for it is not. Enemies and hazards sit between you and the goal, so the robot that hurries usually ends up walking the level twice.

How to play

Walk the robot through each level and get the box to where it belongs. Pick the box up when you need to move it and set it down when you need to move freely, since a trap that is harmless to you alone can still be the thing that stops you carrying anything. Scout ahead before committing, watch how the enemies move, and treat every hazard as something to time rather than outrun.

Controls

Move with WASD or the arrow keys. Space or E picks the box up and puts it down again, and it is the same button both ways, so a mistimed press can leave the box behind at the worst moment. Everything else follows from where you walk and what you are carrying.