FAQ & Knowledge Base

Retiroll is a browser-based random decision arena that turns everyday choices into interactive games. It features nine distinct physics engines. Choose from wheels, pneumatic lottery drums, 3D dice, Plinko, slot reels, darts, cards, bottle spins, and tournament brackets. Built with Next.js and TypeScript, Retiroll executes entirely in your browser with zero latency and requires no mandatory account registration.

Legacy spinners rely on basic 2D rotation of plain text slices. Retiroll provides nine distinct simulation engines with rigid-body collisions, mechanical decelerations, and procedural Web Audio feedback. You can also organize multi-round tournaments, export 3D victory cards, and sync live screens using temporary room codes.

Yes, Retiroll is completely free to use. Selected public informational pages display non-personalized, contextual ads to help cover hosting costs. Interactive game stages, the Sandbox, and live player rooms remain strictly ad-free.

You can use Sandbox without an account. A signed-in host account is needed to sync saved sets privately and open live rooms. Sandbox preferences and private history can stay in your browser; account-saved sets sync to your cloud account.

Local sets can hold large lists, but performance depends on your device. Live room publishing supports up to 10,000 options; try a smaller list on older phones or tablets.

When a decider finishes, click Share Victory Card inside the celebration dialog. You can download an image graphic of the winning pick or copy a direct link to share with your group. Press Shift+Enter to eliminate that winner and start the next spin immediately.

Press ⌘K on macOS or Ctrl+K on Windows to open the Command Palette immediately. From the palette, you can switch decider engines, apply roster presets, toggle sound, and enter Fullscreen Zen mode without touching your mouse. On mobile devices, tap the floating Quick Tools chip at the bottom-right corner to open the same menu as a bottom sheet.

Press Space to spin or roll the active decider immediately. Use number keys 1 through 9 to switch between physics engines in real time. Press R to shuffle roster order, Shift+Enter to eliminate the winner and spin again, and ? to open the keyboard cheat sheet.

Press Z or F on your keyboard to expand the game stage to full screen. Zen mode hides headers, navigation docks, and sidebars to eliminate visual clutter. A translucent presentation bar displays your room code and spectator count with a one-click exit button. Press Z or Escape again to return to standard view.

Yes. Use the zoom stepper in the bottom Zen dock. You can also press + and - on your keyboard to scale the stage between 60% and 180%. Tap the percentage badge or press 0 to reset to 100%. Exiting Zen mode restores standard scaling automatically.

Yes. You can tap the center stage, swipe down on the wheel, or use the floating action button at the bottom of the screen. Touch controls are optimized for iPad, Android tablets, and interactive classroom smartboards.

Retiroll uses the browser’s standard Math.random() function and mode-specific selection logic. Equal weights do not make a result independently auditable, cryptographically secure, or certified. Do not use it for gambling, regulated lotteries, prizes, or other high-stakes decisions.

Each option receives a numerical weight between 1 and 100. The winning probability equals that option’s weight divided by the sum of all weights. On the wheel, higher weights expand the sector arc. In the lottery drum, higher weights generate multiple bouncing balls.

Each spin is a statistically independent event. Past outcomes have zero impact on future spins. In true randomness, clusters and consecutive picks occur naturally, just like flipping a fair coin and landing on heads twice in a row.

Browser Math.random() delivers uniform pseudo-random distributions with zero network latency. It runs instantly on any device without remote server calls. Retiroll is designed for casual group decisions, agile standups, and classroom activities, not for certified monetary gambling or regulated lotteries.

With no-repeat enabled, a selected option leaves the pool until you reset it. This prevents that same option from being selected again in the current run; it does not guarantee that every person gets a turn.

Retiroll does not show a control to preview the next result. Selection runs in the browser using Math.random() and mode-specific logic. The result is not independently auditable or certified.

Yes. Facilitators, trainers, and educators use Retiroll for discussion picks, group formation, and review games. Live participant screens are completely ad-free and require zero accounts or personal student information.

In Host Studio, click "Import CSV / Spreadsheet". Upload a .csv from Google Sheets or Excel, or copy-paste your name column directly into the roster area. Retiroll handles up to 10,000 entries in seconds.

Yes — touch-optimized for interactive whiteboards, conference screens, Promethean boards, and projectors. Tap to spin, confetti fills the screen, and the high-contrast palettes are visible across any room.

Popular setups include: Tournament Bracket for team trivia, Card Draw for quick flashcard drills, and the Wheel for prize giveaways and icebreakers.

Click Sanitize Roster in the roster dock to format your list instantly. The tool strips duplicate names, trims accidental whitespace, and normalizes capitalization across all entries. It also extracts ticket weights like (3) or x2 directly from text.

Yes. Rosters in the Sandbox remain stored on your local device. Live room sessions use temporary six-character codes and collect no personal student information. Participant screens are completely ad-free and require zero accounts.

Fully responsive — works on iPhones, iPads, Android, Chromebooks, Mac, and Windows. Touch gestures are built in.

The game code runs in your browser, but sign-in, cloud saves, live rooms, and the first page load need an internet connection. Offline behavior depends on what your browser has cached, so do not rely on it for a live class.

Not at all. Every click, tick, and fanfare is generated in real time using the browser’s Web Audio API. Oscillator pulses synthesize audio on the fly, so no audio files are downloaded or streamed across the network.

Retiroll uses physical acoustic contact sounds synthesized directly in your browser. We intentionally removed artificial rising frequency tones and continuous pitch sweeps during spins. You hear only natural peg clicks, mechanical decelerations, and celebratory fanfare chords. Press M to silence or re-enable audio at any time.

The classic wheel, lottery drum, and Plinko board run on high-performance HTML5 Canvas 2D. 3D dice uses Three.js and WebGL for realistic physical rotations. The card deck and tournament tree use responsive CSS 3D transforms and SVG diagrams.

Retiroll works in any modern browser supporting HTML5 Canvas and the Web Audio API. This includes Chrome, Safari, Firefox, and Edge on iOS, Android, macOS, Windows, Linux, and Chromebooks.

Sandbox settings and private history may stay in your browser. If you save a set while signed in, it syncs to your private cloud account. Live room configuration is temporary and visible to people with the active code. See the Privacy Policy for details.

Head to Host Studio and click "+ New Set". The interactive stage opens immediately with live physics. Type your title directly into the top header, adjust options in the side drawer, test your spins, and hit "Save Set".

Yes. Each engine maintains its own independent dataset tailored to its capacity. For example, your 3D Dice can keep numbers 1 to 6 while your Wheel keeps 30 student names and your Dartboard keeps 20 target zones.

They upgrade automatically. When you open a legacy set in the new studio, your original options hydrate into the new independent engine format without losing any data.

When a signed-in host opens a room, a six-character code lets people join without an account. Each room supports up to 50 concurrent participants. Anyone with the active code can request that room’s configuration. The room closes when the host ends it or 1 hour after the last renewal.

Each live room supports up to 50 concurrent participants. When capacity is reached, additional participants must wait until a spot opens up. Active sessions stay live for up to 1 hour.

Yes — there’s a Suspense Duration slider in both Host Studio and Free Sandbox. Set it from a quick 2-second snap to a dramatic 10-second nail-biter.

You can export a JSON file and choose who receives it; that file may include every option in the set. Room links contain only a code and work while a signed-in host keeps that room active. A room closes when ended or 1 hour after its last renewal.

When a host opens a room, the server issues a temporary six-character code. Participants open retiroll.online/play and enter the code to join. The host screen broadcasts game state and spin events so everyone watches outcomes unfold together.

Use the Contact page or email retiroll.dev@gmail.com. We read the messages we receive.

Tournament Mode arranges participants into head-to-head or multi-person matches. Results advance through the bracket until it names a final participant or team. Check the match size, number advancing, and other settings before you start.

Bracket mode can remove a participant after a loss. Group Stage organizes participants into pools before advancing selected participants to later rounds. Review the setup to see how many participants advance.

Absolutely. You can set match sizes from 2 up to 10 participants per heat, and choose how many advance from each one. So a 4-person heat where the top 2 move on? Totally supported. The engine handles all the bracket math for you.

You can seed a bracket randomly, follow roster order, or use ranked weights. Random seeding uses browser randomness and is not a fairness certification.

Yes — toggle it on in the tournament setup. The two semifinal losers will play one more round to determine who takes third. 💡 Something to keep in mind: this only applies to standard Bracket mode, not Group Stage.

Each match runs a series of physics spins (wheel, dice, lottery — whichever engine you pick). Points are tallied per spin, and the participant with the highest cumulative score wins the match and advances. You can inspect the full breakdown in the Match Inspector panel after each round.

Yes. You can export clean high-resolution PNG bracket diagrams or printable PDF sheets directly from the Tournament Inspector. You can also export match standings as CSV files for spreadsheet tracking.

Retiroll is a free interactive game service. No website can promise that it is risk-free. We use HTTPS, database access rules, and server-side checks for contact forms. A third-party scanner score is that provider’s assessment, not a security certification from us.

Retiroll is free to use. To cover infrastructure costs, we display non-personalized, contextual advertisements on a small set of public information pages (/about, /faq, /guide, /presets index, /updates, /changelog). Every ad request carries Google's child-directed protection signal (data-tag-for-age-treatment="1"), with zero personalized ads or remarketing anywhere on the site. All interactive games, classrooms, live rooms, and account routes remain completely ad-free.

Non-personalized contextual ads appear only on selected informational pages like /about and /faq to help fund server hosting. Every ad request includes Google’s child-directed protection tags. All interactive game stages, Sandbox, and live player rooms remain completely ad-free.

Sandbox data may remain in your browser. Account-saved sets sync to the signed-in owner’s private cloud account. Live room settings, options, and display names are sent to the room service and connected participants while the room is active. We do not claim COPPA compliance; schools should review their requirements before entering student information.

Read our Safety page and Privacy Policy, or email retiroll.dev@gmail.com. You can also view third-party reputation pages, but their scores are not a guarantee or security certification from Retiroll.