Cloner 3D is a nice and hooking educational 3D arcade game.

This game has no analogs in the game world yet.

There are four game modes: Strategy, Arcade, Strategy Molecule and Arcade Molecule.

Your goal is different in them.

In the first two your aim is to destroy the growing molecule that tries to fill all the free space.

The last two modes have quite an opposite goal: you need to create a molecule given in the beginning of the level.