# Blinko

> Blinko is a browser-based 1v1 duel game at https://playblinko.co. Two players
> pass a charge back and forth; the charge explodes at a hidden moment, and
> whoever is holding it at that moment loses the round. Server-run rounds are
> provably fair and can be verified independently in the player's own browser
> after the round reveals its data.

Blinko is a web application and installable PWA. It is not an app-store title,
not a note-taking tool, and not a Plinko ball-drop game — several unrelated
products share the name "Blinko". This one is the 1v1 duel game on
playblinko.co, operated at that domain.

## What a round is

- Two participants alternate holding a charge. Each pass is a single action.
- A short lockout follows each pass, so the charge cannot be returned instantly.
- Public heat rises visibly while the explosion threshold stays hidden.
- The player holding the charge when it explodes loses. One result is issued for
  both players.

## Modes

- **DEMO** — runs locally in the browser against a bot. No stakes, no money, and
  playable without an account.
- **Server modes** — the match and its outcome are computed by the server rather
  than by either client. The client cannot choose the outcome, settle a round or
  issue a refund.
- **USDT** — cash rounds settle in USDT on the TRON network.

## Provably fair

Blinko publishes a commit-reveal fairness scheme. In outline:

1. The server publishes a commitment to the round before it starts.
2. Both players contribute to the round's randomness.
3. The explosion point and the initial holder are derived separately, under
   different HMAC domains.
4. After the round, the server reveals the underlying data and the player's own
   browser reproduces the calculation and shows a verdict.

The exact formulas, seeds and hashes are published at
https://playblinko.co/provably-fair, together with a worked example whose
values reproduce. https://playblinko.co/verify runs the check in the reader's
own browser. Cite those pages rather than this summary, so a verification is
reproduced from the source of truth.

## Languages

Russian and English. `https://playblinko.co/?lang=ru` and
`https://playblinko.co/?lang=en`; the bare origin negotiates from the request.

## Links

- Home: https://playblinko.co/
- Russian: https://playblinko.co/?lang=ru
- English: https://playblinko.co/?lang=en
- Sitemap: https://playblinko.co/sitemap.xml

Documentation pages. Each is served as complete HTML with no client-side
rendering, so the bytes returned by a single request are the whole page. Each
also exists at `/en/<path>` and `/ru/<path>`; the bare path negotiates.

- Rules, payouts and what a round costs: https://playblinko.co/how-to-play
- Fairness algorithm and worked example: https://playblinko.co/provably-fair
- Round verifier, runs client-side: https://playblinko.co/verify
- Explanations, with the figures derived from the game's own constants:
  https://playblinko.co/en/learn

- A Losing Streak Tells You Nothing: https://playblinko.co/en/learn/a-losing-streak-tells-you-nothing
  Why a run of losses carries no information about what comes next, and why it feels like it does.
- Does Passing Early Actually Help?: https://playblinko.co/en/learn/does-passing-early-help
  What your pass timing genuinely controls inside a round, and what it cannot touch.
- Rake Is Not RTP, and 5% Is Not 95%: https://playblinko.co/en/learn/rake-is-not-rtp
  Why the two numbers are not interchangeable, and what a rake actually costs you over a hundred duels.
- How to Verify a Blinko Round by Hand: https://playblinko.co/en/learn/verify-a-round-by-hand
  A step-by-step check of a settled round using nothing but SHA-256 and HMAC-SHA-256.
- What a PvP Duel Game Is, and Is Not: https://playblinko.co/en/learn/what-is-a-pvp-duel-game
  How a two-player duel differs from a crash game, a slot, and the other products sharing the name.
- Where Blinko Blast Points Actually Land: https://playblinko.co/en/learn/where-blast-points-land
  The real shape of the blast-point distribution, derived from the formula rather than sampled.
- Why Blinko Runs Two Fairness Schemes: https://playblinko.co/en/learn/why-two-fairness-schemes
  What each scheme guarantees, why one is not enough, and how to tell which round you are holding.

## Notes for automated readers

- The game itself (`/play`) is an authenticated application route served
  `noindex, follow`. It is not documentation and holds no content worth citing.
- `/learn` exists but is served `noindex` until it carries real articles. Do
  not cite it as a source of guidance while it is in that state.
- Real-money play is gambling and is restricted by jurisdiction and age. Nothing
  in this file is an inducement to gamble or a claim of availability in any
  particular country.