Game Discovery Wheel
Filter the live arcade collection by time, documented input, pressure, and number of players. Results include direct play and guide links.
Useful when: you know the kind of session you want but not the game.
Small browser utilities
Free tools for quiet play
Choose a game for the time and input you have, try a continuously generated procedural soundscape, check contrast or focus order, or estimate the layout space after browser zoom. Every tool runs in this browser and needs no account.
- 16
- tools
- 0
- uploads
- 5
- categories
Tool category
Play
Choose, plan, and understand a NoCharge game before you open it.
Game Finder quiz
Five answers (time, players, pace, input, kind) produce an alphabetical shortlist from the live catalog. Not a ranking.
Useful when: you want a short, guided choice instead of a filter panel.
Session planner
Turn the minutes you have into a shortlist of games and an estimated number of runs, filtered by players and input.
Useful when: you know the length of your break but not the game.
Random calm activity
One press returns a random NoCharge game, article, or tool — equal probability, no claims, nothing stored.
Useful when: you want a quiet pick without deliberating.
Tool category
Audio
Local, continuously generated procedural soundscapes that never leave the device.
Ambient Mixer
Try ten continuously generated calm nature and music soundscapes. Every signal is made with Web Audio; there are no recordings or music loops, and sound stops when the page is hidden.
Useful when: you want to compare a low procedural soundscape with silence.
Singing Bowl Engine
Place and strike singing bowls on an interactive canvas, circle a rim to sing a sustained drone, tune on touch, and load pentatonic, solfeggio, or chakra presets. Bronze and quartz additive synthesis with harmonic connection lines, organic pitch drift, and synthetic reverb. All audio is generated in the browser.
Useful when: you want to explore consonant intervals, additive synthesis, and sustained rim singing hands-on.
Tool category
Accessibility
Checks and explainers that use the same standards NoCharge targets.
Contrast checker
Compute WCAG contrast ratios for any two hex colors and compare the common Quiet Arcade palette pairs.
Useful when: you are checking a board, text, or palette pair against AA thresholds.
Reduced-motion preference tester
Read the live prefers-reduced-motion query, see its effect on a demo, and read exactly what NoCharge changes when it is on.
Useful when: you want to verify the browser setting and what the site does about it.
Touch target size checker
Draw and measure a target in CSS pixels against WCAG minimums and NoCharge’s generous defaults, including spacing.
Useful when: you are sizing buttons or checking a board for comfortable one-thumb play.
LocalStorage inspector (read-only)
List NoCharge keys present in this browser with their purpose and owner. Never writes or deletes anything.
Useful when: you want to know what this browser holds without opening DevTools.
Focus order demo
Tab through a sample grid with visible focus and reading-order navigation, with the three checks keyboard users depend on.
Useful when: you want to see what logical focus order means on a real control grid.
Tool category
Setup helpers
Small calculators for the desk, screen, keyboard, and light around your device.
Browser Zoom Viewport Calculator
Convert a starting viewport and browser zoom percentage into approximate CSS layout dimensions, then use that size for manual reflow testing.
Useful when: preparing 200% or 400% browser-zoom checks.
Tool category
Learning
Rule and scoring explainers tied to the games that use them.
Nonogram clue calculator
Enumerate the arrangements of a nonogram line, mark cells forced in every one, and see the arithmetic — educational, not a solver.
Useful when: you are learning to read nonogram runs or stuck on one row.
Solitaire rules comparator
Side-by-side rules for Klondike, FreeCell, and planned Spider: decks, draw, tableau, foundations, and planning style.
Useful when: you want to pick a solitaire by rule differences rather than brand.
Sudoku pencil-mark helper
See candidates for a selected cell and learn hidden-single logic. Non-spoiler by default; a labeled reveal is available if you choose it.
Useful when: you are learning pencil marks or stuck on one cell.
Word length & scoring explainer
Compare linear and length-squared scoring curves, see the idea behind Word Tile Rush, and inspect the table of common lengths.
Useful when: you want to understand why longer words score more.
How these tools behave
In the browser, and nowhere else.
No tool sends your inputs to NoCharge. Where a tool writes a preference (for example an audio texture choice), the Privacy page documents it and Clear game data removes it.
Tool results are estimates and explanations, not guarantees. Each page states what it cannot do next to what it can.
FAQ — Tools
Do these tools need an account?
No. Their calculations, filters, and audio generation run in the browser. The site Privacy page explains separate analytics and advertising choices.
Do the tools upload my entries?
No. Values you enter are used only by the current page. The ambient mixer synthesizes audio locally with the Web Audio API, and no tool sends your input to NoCharge.
How is a tool categorized?
Each tool appears in one of five categories by its primary purpose: Play, Audio, Accessibility, Setup helpers, or Learning. Categories are descriptive, not a ranking.
Can I embed a tool?
Each tool page includes an iframe example with a descriptive title and source link. A site owner should still review the embed for their own privacy, security, and accessibility requirements.