Rhythm Game

Rhythm Game synchronises player input to a musical beat, judging each press against a timing window and awarding tiers of accuracy — commonly Perfect, Great, Good and Miss — that determine score and, in stricter titles, whether the run continues. The judgement is a Skill Check repeated dozens of times a song, its window narrow enough to be argued in Frame Data terms, and the genre stands or falls on how legible that check feels: a hit that is correct but reads late is worse than a hit that is wrong but reads fair, which is why it leans on Game Feel harder than almost any other form.

Offset calibration is not a settings-menu nicety, it is fairness. Audio and display latency vary by hardware — headphones, TVs, Bluetooth — and an uncalibrated setup can shift a player's true timing by tens of milliseconds relative to what the chart expects, quietly failing hits a well-tuned rig would pass. Titles serious about the genre treat calibration as Accessibility work, alongside adjustable window sizes offered as Assist Mode for players whose reaction time or motor control does not match the default.

Charts, the authored map of which input lands on which beat, are still mostly hand-built by ear despite attempts at algorithmic generation from raw audio, because a good chart interprets a song's feel rather than its onsets; Procedural Generation gets close on simple tracks and badly wrong on syncopated ones. Nearly all of these games play a pre-composed track and ask the player to meet it, including the ones that sound improvised: Thumper (2016, Drool) was scored by Brian Gibson level by level around fixed time signatures, and the player hits lit notes in time with music that is already there, adding percussion on top. Tetris Effect (2018) works the same way, layering effects over a composed backing. Genuinely generative audio is rarer — Everyday Shooter (2007) builds its guitar score out of the enemies the player destroys — but in either arrangement, chasing a clean run, a tight Compulsion Loop feeding full-combo Achievement Hunting, starts to feel like composing.