Video game harmony cannot be ranked on a single scale of complexity. A score’s harmonic character only means something once you know what the music is doing inside the game: whether it loops for an hour of grinding, shifts when a battle starts, or sits under a scene where the player’s choices change what happens next. Dense chromatic motion can create instability or cinematic scale in one context, while a single sustained chord can be the right choice in another. Scholarship has not settled on one accepted measurement of harmonic complexity for game music, and no study that I could identify ranks soundtracks by how many chords or modulations they contain. What the sources do support is a more useful question: how harmony behaves, and how well it serves the game.
What “harmonic complexity” actually measures
When musicians and analysts talk about harmonic complexity, they usually mean several different things that can vary independently. A score can have a rich chord vocabulary but stay anchored to one tonal center. Another can use very few chords but move through them in ways that feel unstable. Keeping these dimensions separate avoids the common mistake of treating “more chords” as “more sophisticated.”
- Chord vocabulary: the types of chords used, from diatonic triads to quartal chords, extended harmonies, or whole-tone and octatonic collections.
- Tonal movement: whether the music settles around a stable center or keeps shifting where that center lies.
- Chromatic modulation: moves between keys or tonal areas, especially when they are abrupt or frequent.
- Polytonality: two or more keys asserted at once, which listeners often hear as an unresolved tension rather than a sequence of key changes.
- Adaptive behavior: how harmony changes when the game state changes, and whether those changes keep the musical thread intact.
Rhythmic density, timbre, counterpoint and orchestration can also make a cue feel busy, but these are separate from harmonic activity. A cue with a single held chord and dense percussion is harmonically simple but texturally complex, and the two should not be merged into one judgment.
Why game harmony is judged differently from a soundtrack album
A game score is heard as part of an interactive system. The Journal of Sound and Music in Games has argued that analysis of game audio needs methods suited to that context, because music may respond to player action and be experienced as a real-time event. Analysts working in this area are encouraged to consider immersion, narrative, movement and technological constraints alongside musical structure, harmony, counterpoint and instrumentation. The same scholarship recommends playing the game analytically, not only listening to it.
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This matters because commercial soundtrack releases can be rearranged, partial or static versions of what players actually hear. A harmonic reading drawn only from an album can miss the transitions, layers and state changes that define the in-game experience. Any claim about how a game’s music adapts should rest on play, not on the album alone. The methodological argument is laid out in “Ludomusicology: Normalizing the Study of Video Game Music”.
How adaptive harmony works in practice
Vertical variation in Final Fantasy VII Remake
A scholarly analysis of Final Fantasy VII Remake describes a “vertical” adaptive approach. Rather than replacing one piece with another, different game states prompt shifts between harmonically compatible variations of differing intensity. The analysis examines battle edits that keep material from the location themes while signaling that combat has begun, so the player still recognizes the place even as the music changes character. This is a case study of one game’s approach, not a description of how contemporary games in general handle adaptive music.
Chromatic modulation and pantriadic structure in the Scorpion Sentinel encounter
The same analysis identifies chromatic modulations and pantriadic harmonic structures in the Scorpion Sentinel encounter. Its battle edits intensify as the fight progresses. Here harmonic complexity is doing a specific job: the music grows more unstable and more active as the encounter escalates, and the change is tied to the game’s pacing rather than to a fixed level of sophistication.
Preserving continuity at the seams
Modular game music is built from sections that can be recombined, so the points where one module meets another become analytical objects in their own right. In “Analyzing Modular Smoothness in Video Game Music,” published in Music Theory Online, the author defines smoothness as how well convergent modules fit together, and contrasts it with disjunction, where the seam is audible and abrupt.
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1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problemsThe paper proposes analyzing seams through five factors: meter, timbre, pitch, volume and abruptness. It includes examples from The Legend of Zelda: The Wind Waker and Portal 2. The key point for harmony is that smoothness is not automatically better. A smooth join can keep a player immersed, while a disjunctive join can signal a change in situation or deliberately break a mood. Harmonic movement at the seam is one of several factors shaping which effect the designer gets. The article is at mtosmt.org.
Restraint as a design choice: JRPG battle loops
Harmonic simplicity is often the most effective choice for music that must repeat. In “Sounding the Grind: Musicospatial Stasis in JRPGs,” published in the Journal of Sound and Music in Games, the author discusses battle themes built on ostinatos and pedal tones, sometimes with little bass movement. These materials can sustain a long combat sequence without wearing out the player, because the music stays in one place and lets the pace of the action carry the energy.
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The same scholarship also notes harmonically active exceptions, so restraint is one tendency among several rather than a rule. It cautions that a detailed chord reduction alone can miss what makes a battle loop effective. Sparse harmony, in other words, is not inherently simplistic or deficient. It can be the most sophisticated answer to the problem a loop has to solve. The article is available through the Journal of Sound and Music in Games.
Dense harmony for instability and scale: a composer’s account
Composers also use complex harmony deliberately to unsettle a listener. In a Game Developer interview, composer Winifred Phillips discusses her work on Jurassic World Primal Ops. She names quartal chords, polytonality, whole-tone and octatonic scales, meter changes and kinetic fragmentation as techniques she used to create unpredictability and tension. She describes setting a familiar, classically harmonic melody against a polytonal structure underneath:
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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware match“The idea that you can use a classically harmonic melody that would feel familiar to listeners, and yet set it against a polytonal structure underneath that’s asserting more than one key at a time, that takes us away from our comfortable settled sense of where the harmonic center is in the composition, and moves us more towards a sense of uncertainty about where the harmonic weight is moving – where we’re going next.”
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Phillips also stresses that such material needs internal logic and a unifying theme, so that the effect reads as tension rather than noise. The interview is available on Game Developer. It records the composer’s intent and explanation. It does not establish how all listeners respond to polytonality.
Procedural harmony: a 2023 prototype
Some work moves harmony into the system itself. A 2023 paper in the DiGRA Japan conference proceedings, by Chun-Ip Jason Chan, Akinori Ito and Koji Mikami, presents a system for dynamic chord progression generation based on Neo-Riemannian theory. According to its abstract, the algorithm was implemented in Wwise and demonstrated in an interactive Unity example. This is a research prototype, and it shows what is technically possible rather than how commercial adaptive scores are usually built. The paper is available at J-STAGE.
Examples side by side
| Example | Harmonic behavior reported | Game context | Design function identified |
|---|---|---|---|
| Final Fantasy VII Remake battle edits | Harmonically compatible variations of differing intensity; location material retained | Shifts between exploration and combat states | Signals combat while keeping place identity |
| Scorpion Sentinel encounter | Chromatic modulations and pantriadic structures | Battle edits intensify as the encounter progresses | Escalation tied to fight pacing |
| The Legend of Zelda: The Wind Waker and Portal 2 (seam analysis) | Not stated as a harmonic finding; the paper’s focus is seam factors | Modular sections joined at transitions | Smooth or disjunctive joins, depending on intent |
| JRPG battle themes (Sounding the Grind) | Ostinatos and pedal tones, sometimes little bass movement; harmonically active exceptions noted | Extended repeated combat | Sustains pace without fatigue |
| Jurassic World Primal Ops (Winifred Phillips, as described in interview) | Quartal chords, polytonality, whole-tone and octatonic scales, meter changes | Tension and unpredictability in action | Unsettles the listener while keeping internal logic |
| Dynamic chord progression prototype (DiGRA Japan, 2023) | Chord progressions generated via Neo-Riemannian theory | Wwise implementation and Unity demo | Technical demonstration; musical effect not stated |
How to compare two game scores fairly
When you set two scores side by side, the most common error is comparing chord counts across different kinds of cue. The following sequence keeps the comparison anchored to what the music does in play.
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- Name the musical behavior being compared, such as a battle loop against a boss escalation, or an exploration theme against a transition into combat.
- Describe tonal and chordal vocabulary for each: stable center, chromatic movement, modal color, or polytonal layering.
- Measure the rate and direction of harmonic change, noting whether a pedal or ostinato holds the harmony in place or whether chords and modulations arrive frequently.
- Play the game through the states that trigger the cue, and note whether the harmony changes with those states and whether the transitions keep or break continuity, using the seam factors described above.
- Judge how the music tolerates repetition and supports the pacing of play, then separate texture, rhythm and orchestration from the harmonic reading.
These steps are an editorial framework drawn from the studies above, not a standardized scoring rubric. Two analysts can apply them and still reach different conclusions, which is a feature of the approach rather than a flaw. Use the framework to describe a score accurately, not to assign it a grade.
What the evidence does and does not establish
The sources in this area are scholarly case studies, a composer interview and a conference prototype. They establish that game harmony can be analyzed through its adaptive behavior, its seams and its role in repeated play. They do not establish a ranking of harmonic complexity across game soundtracks, and I did not find a well-sourced quantitative measure that compares the harmonic density of game scores. Any claim that one game’s music is “more complex” than another’s would need its own defined method and evidence, and most would be better stated as a claim about how the music works in its context.
For a broader introduction to the field, Karen Collins’s Game Sound: An Introduction to the History, Theory, and Practice of Video Game Music and Sound Design is a foundational book that covers the interactive context discussed above.
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