Color Screw 3D

Color Screw 3D gives you a three-dimensional object held together by coloured bolts and asks you to take it apart in a sensible order. Unscrewed bolts are sorted into boxes by colour, and every box has room for only three of them.

That limit is why the sequence matters, and the developer stresses planning it. Once the bolts holding a piece in place are gone, that part drops away under physics, and its fall can expose further layers with more bolts that were hidden underneath. Because the object is fully 3D, you can rotate it to see bolts on every side before choosing which one to remove. The aim in each level is to clear the whole structure. The developer gives no level count and names no boosters, so the puzzle rests on the bolts, the boxes and the order you pick.

On a computer, hold the right mouse button and drag to turn the object around, then click a bolt to unscrew it. On a phone or tablet, swipe to spin the object through a full 360 degrees and tap a bolt to remove it. Bolts go into boxes of their colour, three to a box. Clear the structure to finish.

Each box holds three bolts, so think about which colours have a box waiting before you unscrew anything. Turn the object right round before committing, because bolts on the far side count too. Remember that removing a bolt can drop a piece and reveal new bolts beneath it.

A 3D screw sorting puzzle where bolts go into colour boxes of three. The 3D object is shown in a landscape frame. The developer lists mouse controls for PC and swipe and tap controls for mobile. No level count is given.

Fish Sort Puzzle works on a similar rule of three, with fish filling matching tanks in threes. Fruit Box Sort also feeds items into matching containers, from fruit boxes you tap open.