50 Greatest Game Innovations

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32. Interchangeable dialog playback (aka "stitching").

This is the practice of assembling audio clips together to produce seamless dialog with varying content. We use it to create credible play-by-play in sports games, where the names of different athletes have to be inserted into the commentary. It has done a lot to create a truly television-like experience. Best-known early example: Hardball III, 1992. Probable first use: 3rd Degree for the CD-i player, 1992.

33. Adaptive music.

Everyone recognizes the power of music to create a mood. In videogames, the trick is to change the music in response to game events, and of course the composer can't know in advance when they might occur. One approach is simply to play a new track on demand, but the transition can be jarring if not done well. Another approach is layering—mixing harmonizing pieces of music together and changing their volumes in response to the needs of the game. Best-known early example: Wing Commander, 1990. Possible first use: Way Out for the Atari 800, 1982.

34. Bullet time.

Adjustable time has long been standard in flight simulators; it lets you speed up game-world time in order to get through dull periods quickly. Bullet time is a later innovation. It slows time down while still letting you act quickly, so it creates a feeling of super-speed to go with the more common game sensations of super-strength or super-toughness. Best-known early example: Max Payne, 2001. Possible first use: Requiem: Avenging Angel, 1999.

35. Deformable environments.

Here's a classic game absurdity: a huge explosion destroys a tank, but does nothing to the walls and windows nearby. Deformable environments correct this and let you literally change the world. This feature poses a risk to a game's level design because you may be able to get into places the designer didn't expect you to; but it makes the world much more realistic and lets you solve problems in your own way. Possible first use: Magic Carpet, 1994.

36. Clever indicators for unusual attributes.

Health, speed, mana, lives, ammunition, fuel, and so on all use pretty standard screen indicators: power bars, digits, gauges, repeating small images. Many are borrowed from real-world devices. But what about other, less obvious attributes? Over the years we've devised a variety of clever ways to display them—too many to list, so I'm lumping them all together. Some personal favorites: the flickering light in Thief: The Dark Project that indicates how ";noticeable" your avatar is; the crosshairs that grow farther apart to indicate reduced weapon accuracy while you're moving in shooter games; blurring the screen and rendering the controls unreliable to convey that the avatar is drunk or drugged.

Genres

We borrowed many videogame genres from other game forms, but a few genres would not have been possible before the invention of the computer, and represent real design innovation.

37. Construction and management simulations.

Both LEGO blocks and business management games predate the computer, but videogames put the two ideas together for the first time.  Best-known early example: SimCity, 1989. Probable first use: Utopia for the Mattel Intellivision, 1982.

38. Real-time strategy games.

Turn-based computer war games had their roots in classics like the Avalon Hill board games, and many of them looked like board games too, with square counters representing units on a hexagonal grid. The addition of real time play made strategy gaming far more accessible to the general public, although purists would complain that RTS games replace true strategy with rapid mouse clicking and resource management. Best-known early example: The Ancient Art of War, 1984. Probable first use: Stonkers for the ZX Spectrum, 1983. A related genre is real-time tactics, games that concentrate on individual battlefields (e.g. the Total War series) and eliminate the resource-manufacturing aspects of RTS games.