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Recently, I have come across a series of YouTube videos by one Keith Burgun, presenting his ideas on (video) game design. While I do not necessarily agree with all of his conclusions, I do find his insight into many aspects of gaming keen and valuable, which is why I'd like to edit his main points, as I understand them, together in this post. For more in-depth explanations and examples, please check out the original videos.

Taxonomy

As the foundation of his future analysis, the author proposes a taxonomy of "interactive systems", which he applies to electronic entertainment, among many other things. This taxonomy divides interactive systems into four hierarchical categories, based on how the consumer interacts with them and what values they receive from it:

Heuristic Learning

The author posits that games (in the sense of his taxonomy) are unique among entertainment forms in providing their consumers (players) with the "game fun", which he defines as "heuristic learning". Since human brain is wired to be very good at just such a learning, as well as at creative problem solving rooted in it, it naturally rewards us for engaging in games. This heuristic learning ("understanding") is facilitated by the game feedback loop:

  1. The player makes a decision and acts upon the game state accordingly
  2. The game determines the outcome of the player's action, obfuscates the new game state, and presents it to the player
  3. The player observes the new (obfuscated) game state, learns about the efficacy of their decision, and applies this knowledge to their future decisions

"Obfuscation" here does not necessarily mean "hidden information": it can also be strategic in nature, such as obfuscation of long-term consequences of a particular move in chess. Obfuscation is important, because "decision" here refers to choices based on incomplete information, situated on the continuum between random guesses (where no data informs the player's choice) and calculations (where the player has all information they need to make an optimal choice).

Editor's note: The author does not mention another type of "decision", namely, a choice between incomparables, as mentioned by Extra Credits.

A good balance between these two extremes is what lets the player bring their heuristic knowledge to bear, and all of the player's decisions throughout the game build up to the end state, i.e. winning or losing. A game must be technically but not practically solvable, complex enough to avoid solution, but simple enough to learn (the classic "easy to learn, hard to master" formula).

Elegance, Depth, and Width

The goal of a game designer is to create an interactive system with the smallest appropriate amount of rules. The author defines a game's depth is as the measure of how much heuristic understanding it requires, as well as of how strongly it resists a provably optimal solution. The game's "elegance" is the ratio of its depth to the number of its rules.

Editor's note: At this point, the author echoes the findings of the MDA model: what he calls "rules" (inherent complexity), Hunicke et al. called "mechanics", and his "depth" (emergent complexity) is the number of their "dynamics". Thus, "elegance" can also be defined as a ratio of dynamics to mechanics.

"Width", on the other hand, refers to the amount of "content", which, in turn, is defined as additional rules that are individually nonessential to the game. Adding content is a common way for developers to extend the life cycle of games that lack a truly complex and thus sustainably engaging core mechanics. The drawback here is that while content makes it linearly harder to "solve" the game, it also makes it exponentially harder to balance it, which ultimately produces a handful of Pareto optimal solutions that dominate the metagame. Thus, additional game content often actually adds very little to the game.

Clockwork Game Design

In this section, the author presents his method of approaching game design, which he also describes in detail in his book. In this method, the game design begins with a "core mechanic", which consists of a "core action" (what you do in-game) and a "core purpose" (what you hope to accomplish with that action). The core mechanic is intrinsically tied to the main goal of the game, which should be the ultimate expression thereof. With the core mechanic in place, supporting mechanics can be built around it, adding nuance and complexity to it without directly competing with it for the player's attention. The author illustrates it with an example form Super Smash Bros.. The core mechanic in that game is "attack opponent…" (core action) "...to knock them back" (core purpose), and the main goal is "to knock all opponents so far out, they cannot come back".

Randomness

Unlike deterministic variables, random ones are inherently unpredictable and, more importantly, unlearnable (their range is learnable, but a particular instantiation is not). Random variables in interactive systems fall within a continuum, based on when the randomness occurs in relation to the player decision:

The author argues strongly against using output randomness, as it takes agency away from the players and delivers potentially incorrect feedback that hinders them in their heuristic learning (e.g. when bad luck ruins a good strategy).

Hidden Information

Games are, by design, technically solvable, and once solved, all decisions in them become calculations. As mentioned above, one way to prevent having your game solved is to keep adding content to it, but doing so only transforms it into a contest of who can calculate the new content faster. Another is to employ output randomness to intentionally hinder the player's learning, but it has its own obvious problems. The lack of a cap on look-ahead in a deterministic perfect information game can lead to "analysis paralysis", and the solution is to hide the complete game state behind a carefully placed information horizon. This limits the calculation space and facilitates the "incomplete information" decisions (see above), however, it also shifts the game towards output randomness, as the player now has less understanding of how their decision resulted in the new game state. Therefore, a balanced information horizon is an important ingredient of a heuristically learnable game, along with a high elegance ratio.

Execution

Games where the player's success is determined by their execution of particular inputs substitutes explicit output randomness with one "seeded" by the player's manual dexterity and hand-eye coordination. While it is better than regular randomness, since it can (theoretically) be improved with practice, execution-based challenges are much better off in contests than in games (see the taxonomy). Informed decisions need time to form, therefore limiting time that can be taken for a decision (i.e. relying on reflexes) makes it an execution problem instead.

Theme

A theme is a metaphor attached to a gameplay system. It is used to communicate the ruleset to the player via symbols, and must be therefore, first and foremost, clear and understandable.

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