The Game of Harmony

The Game of Harmony was a strategy video game developed by The Assembly Line in the late 1980s. It was published as The Game of Harmony in the United States by Accolade, and as E-Motion by U.S. Gold elsewhere. It was available for Amiga, Amstrad CPC, Atari ST, Commodore 64, DOS and ZX Spectrum, and a Game Boy Color version was developed by The Code Monkeys.

The player controls a round spacecraft, and must work to clear all globes from the screen within a time limit. Globes come in three different colors, and those of the same color will disappear when they collide, whereas differing-colored globes will produce small pods. Pods can be collected for more energy, but if they are not picked up quickly, they will turn into globes. There are 50 levels of increasing difficulty. On some levels, elastic bands connect certain globes, and in others, barriers block the movement of the player and the globes. On difficulty settings above "easy", the globes are somewhat volatile. If they are not cleared within a certain time of their appearance, they will explode and damage your ship. If your ship loses enough energy, it is destroyed.

The player's spaceship is operated by polar control, as in Spacewar!: moving the joystick left or right rotates the ship, and pressing the Fire button makes it thrust in whatever direction it is facing. The game's distinguishing feature is its realistic model of kinetics. Objects colliding with each other change their speed and direction in a realistic way.

The "E" in the title of E-Motion stands for Einstein, and he appears in cover art and advertisements.

There is a sequel, Vaxine, a more complex 3-dimensional shooting game.