Action simplification merges multi-step operations into one input

What it is

Action simplification merges multi-step or precision-sequenced operations into a single input: one button executes "aim + shoot + holster," a combo becomes a single-key trigger, and multi-step interactions (crouch, then interact, then stand to open a door) compress to one press. It serves players with motor limitation (every extra input is a failure opportunity) and cognitive load limitation (sequence memory is hard), making the number of inputs no longer decide whether one can play.

Why it happens

Simplification compresses the game's required actions from "inputs × sequence length" to "decisions." Under standard controls, one game action (climbing over a wall) may demand a precise four-input sequence (jump, grab, direction, vault), each input an independent motor execution where any step's failure fails the whole action—with a per-step success rate of 90% for a motor-impaired player, the four-step completion rate is 66%, difficulty magnified exponentially by sequence length. One-button simplification transfers execution responsibility to the system (the system performs the optimal sequence), leaving the player the decision layer of "when to do what," with physical precision reduced to a single press. The simplification space has tiers: full merging (one button does all), partial merging (frequent combos merged into macros), and timing simplification (input buffering and auto-complete of sequences)—different tiers give differently limited players their own step up.

Where it stops holding

Simplification's relation to genre needs sorting: where execution precision is the core play (fighting, rhythm games), full simplification removes the game (the substitutes are relaxed judgement windows and auto tiers—see difficulty dimensions), while where precision is only a means (narrative adventures, RPGs), simplification never touches the core experience. Presentation has traps: simplification buried deep in an accessibility menu (see discoverability) equals nonexistent for those who need it; packaging it with shame-inducing naming like "easy mode" (see difficulty shaming) deters its users. Simplification must also address physical reachability, not just input count—a one-handed player whose merged single button sits in a two-handed default layout gains nothing. Simplification depth requires analysing each operation's actual structure (which steps are decisions, which pure execution); blind merging swallows decisions too (see decision-rights preservation, next).

Applying it

• Identify multi-step operations from the action inventory (three-plus steps or precise timing), provide a one-key simplified version for each, documenting what the simplification preserves and replaces.
• Link simplification with custom mapping: the simplified single key can be rebound to any physical input, compatible with one-handed layouts and switch devices.
• Verification: have motor-impaired testers complete the core operation set in standard versus simplified modes, comparing completion rates and time. The simplified mode's rate should approach standard players'; a significant shortfall means simplification missed the real barriers.

Related

• Same group: W8.05.2 Auto-execution lets players skip precision and focus on strategy · W8.05.3 Simplification must preserve final decision rights · W8.05.4 Over-automation makes some players feel the core play was taken
• Nearby: W8.04 One-handed and switch access · W8.01 Difficulty options and customisation · J1.02 Motor accessibility
• Search terms: one button mode · input simplification · action merging · motor accessibility