Independent guide · virtual-coin demo

Return Arc Cover: Demo, Mechanics and Wallet Guide

The official website of jaonai.

The official website of jaonai. This guide covers the Return Arc Cover browser demo. The original demo runs in the browser with no verified app or APK supplied. No installation, sideloading, account, or security-bypass procedure is established. This guide uses a local virtual-coin wallet to demonstrate the game's specific mathematical properties.

Game Mechanics and Controls

The core mechanic of Return Arc Cover is defined as the minimum vertex cover of a graph where vertices are consecutive-return arcs and edges represent strict endpoint interlacing. The game uses twelve independent fair left/right bounces to define thirteen signed positions, including the origin.

There is only one active ball per round. The available stakes are 10, 20, 50, and 100. The demo features no Auto-play, no Stop button, and no cash-out option. The selected whole stake is deducted immediately when a round starts; the gross return is credited after completion.

FeatureStatus
Stakes10, 20, 50, 100
Auto-playNone
Stop/Cash-outNone
BallsOne active ball

Mathematical Evidence and Payouts

Powers 1, 2, and 3 each use their exact complete-path mean, giving a 96% expected gross return. The displayed multipliers represent gross coin returns, not profit. Fractional carry persists through settlement.

PowerExpected RTPMeasured RTPCarry
196%96.01775%0.21057934332301542
296%95.954455%0.67835051656931
396%95.893825%0.7963638915382214

Simulation measurements are supporting sample observations, not the mathematical payout law. The expected RTP is not a promised session result.

Wallet and Persistence Rules

The demo wallet begins with an initial balance of 1000. If the idle balance drops below 10, you can manually restore it to exactly 1000. This is a manual set, not an automatic replenishment or coin addition. Fractional change persists through settlement, manual refill, and reload.

Local settled balance, including zero, persists. However, if you reload the page during an active round, the unfinished ball ends without refund or resume. Controls for stake, mode, and refill are locked during active play, though sound remains available.

App and Identity Status

The original demo runs in the browser. No app or APK is supplied or verified. No installation, sideloading, account, or security-bypass procedure is established. This guide is independent; the demo does not certify or reproduce any outside product. Identity status is unverified except for individually reviewed primary-source facts.

Privacy and Storage

Game source uses localStorage for settled balance and fractional carry. This does not establish anonymity or exclude other processing. The template declares a Google Fonts stylesheet; actual full-site network capture remains pending. The absence of account or payment controls in the demo does not prove that no personal data are processed.

The shared page builder also declares a Statinside counter script and a noscript pixel with identifier44. These declarations do not establish a complete network inventory or any guarantee about tracking, retention or other processing.

Audience and Responsible Use

18+ is this guide's own intended audience policy, not a universal legal age or implemented age gate. This demo has no account-login flow. Responsible-use pages can describe optional pauses, a personal time/virtual-coin limit, and finding appropriate local qualified help. The demo does not clinically train behaviour or make losses safe.

Frequently asked questions

Is Return Arc Cover available as a downloadable app?

No. The original demo runs in the browser. No app or APK is supplied or verified. No installation, sideloading, account, or security-bypass procedure is established.

What happens to my balance if I reload the page?

Local settled balance persists. However, if you reload during an active round, the unfinished ball ends without refund or resume.

How does the balance restoration work?

If your idle balance falls below 10, you can manually restore it to exactly 1000. This is a manual set, not an automatic replenishment.