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Accessibility

Accessibility Flags: The Five Features That Actually Matter in Browser Games

By Bramwell Faucher|Published 12 October 2024|Last reviewed 15 September 2025
accessibilitydisabilitykeyboardcolour-blindnessseizure-safe

Browser games are theoretically well-positioned for accessibility — they run in the same environment as the web, which has decades of accessibility infrastructure. In practice, most browser games have implemented none of it. Here are the five features that matter, and how to tell whether they are real.

One: Keyboard-completable play path

A game that requires a mouse to complete is inaccessible to a significant portion of players with motor disabilities. The test is simple: can you navigate the entire game using only a keyboard, with no mouse required at any point? Not 'can you mostly play with a keyboard' — every interaction. Including menus, including the pause function, including any optional collectibles or completion paths. The games in the keyboard-only category on this site have passed this test. It is a binary test, not a spectrum.

Two: Scalable or high-contrast text

Browser games are frequently built with fixed-size text rendered to canvas elements, which means browser zoom doesn't affect the text size — a standard tool for visually impaired users stops working. The accessible approach is to render UI text as DOM elements (which respond to zoom) rather than canvas text. Games that render their entire interface to a single canvas element fail this test by design. The better approach — rendering UI elements as overlaid DOM with ARIA labels — is more work but produces a game that works with screen magnifiers and high-contrast mode.

Three: Colour-blindness-safe design

Roughly 8% of male players and 0.5% of female players have some form of colour vision deficiency. Games that use colour as the sole distinguishing signal for game-critical information (a common pattern in puzzle and match-3 games) are inaccessible to these players. The test: screenshot the game and run it through a colour-blindness simulator. If the game-critical information is still distinguishable under all four major types (protanopia, deuteranopia, tritanopia, monochromacy), the design passes. Shape or pattern as a secondary signal is the standard solution.

Four: No seizure-triggering content

Browser games frequently use flashing effects for visual feedback — success animations, damage indicators, screen transitions. Photosensitive epilepsy affects approximately 3% of people with epilepsy and can be triggered by flashing between 3–50 Hz. The WCAG 2.1 guideline is clear: no more than three flashes per second, no flash occupying more than 25% of the screen. Many browser games violate this. Games in the one-handed and accessibility categories on this site have been checked. Games in other categories have not been systematically audited for this — check before extended play if you have photosensitive epilepsy.

Five: Audio alternatives for audio-cued gameplay

Some browser games use audio as a primary game mechanic signal — games with rhythm elements, or strategy games where distinct audio cues signal enemy approach. Deaf and hard-of-hearing players need visual alternatives for these signals. The games that handle this well either don't use audio as a primary signal (most puzzle games, most idle games), or provide explicit visual alternatives for every audio cue (rarer but it exists). Mini Metro does this particularly well — the visual information is complete; the audio is enrichment, not infrastructure.


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Frequently Asked Questions

Are any browser games fully accessible?

Very few browser games are fully accessible by web standards. Bramwell's one-handed and keyboard-only categories are the closest the site comes to accessibility-verified. The most consistently accessible sub-genre is browser interactive fiction — text-based games built with Twine or Ink render as standard HTML and work with screen readers, keyboard navigation, and zoom.

How do I request an accessibility review of a specific game?

Use the contact form below with the subject 'Accessibility Review Request.' Bramwell reviews one to three accessibility-specific games per month. Priority is given to games that have made explicit accessibility claims.


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