This is a molecular simulation I created using Blender Game Engine around 2014. All the gaming logic uses Python.

• Molecules are built by placing atoms close to eachother.
• Atoms in molecules interact according to VSEPR theory and the ball and spring model.
• Small organic molecules have shapes similar to those observed in real life.
• Automatic naming of simple molecules based on their component elements.
• Supports double and triple bonds.
• Building blocks include Hydrogen, Carbon, Oxygen, Nitrogen, Bromine, Hydroxide and Hydron.
• Visual indicators for lone pair valence electrons.
• FPS style camera movement and control scheme.

Note: This is a 3D simulation, even though the models appear 2D in these screenshots.

Cyclohexane at another angle

Install blender from https://www.blender.org/

Open molecules.blend

Press P to play

• Esc: Exit

• W,A,S,D: Movement

• Q,E: Move Down/Up

• R: Reset

• Numbers 1-6: Switch between elements (names are shown in game)

• Left click: Fire specified element

• Right click: Fire carbon element

• Space: Fire antimatter (destroys elements)

• T: Fire laser (moves molecules further away)