RUST50/50
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Coinflip

Coinflip lobby

Coinflip summary

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Chat rules

Be respectful. No harassment, spam, advertising, links or private information. This is a public lobby conversation, not customer support.

Messages are limited to 280 characters and three messages per ten seconds. Only the latest 50 messages are kept in memory; they disappear when this preview service restarts.

SIGN IN

Sign in

Checking Steam sign-in availability. Real item transfers remain disabled.

TEST LOBBY ACCESS

A separate temporary test identity with sample items. This is not Steam sign-in.

ONE TIME ONLY

Confirm you're 18+

Saved once; you won't be asked again. Play responsibly — see responsible gambling.

NEW ROUND

Create a coinflip

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ROUND

Coinflip

CHECK THE RESULT

Round checker

Enter a ten-digit round number, or fill in a revealed proof below.

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Game information

Test environment

Only mock items are used. Item values are illustrative, not live market prices. There are no real deposits or payouts.

Stake-weighted odds

Equal stakes have a 50/50 chance. A joiner can match within 6%; the exact chance is displayed before joining.

Round proofs

Open the round checker before a result to see its commitment. After the flip, check the revealed seed against the commitment and recorded winner.

Before a real launch

Steam authorization, trade-bot access, regional eligibility, legal review and an independent security review remain required. This preview is not approved for real gambling.

Preview terms

This is an 18+ test environment. No real skins, deposits, withdrawals or earnings are available. Synthetic opponents are simulated, not Steam members, and are labelled TEST BOT. Values are illustrative.

Item fee

The current preview engine selects whole items worth at most 8% of the combined pot when a round settles. Whole-item selection can produce a lower fee, including zero. The result lists the actual retained value. It is not 8% of net profit.

The requested retained-winnings and final-cashout-only fee mode is under development and is not active in this round engine. Before that mode is enabled, its selected policy and final fee must be shown at confirmation. A 5% policy, if offered, cannot silently change to 8% mid-session.

Chances and verification

Equal stakes have equal chances. Unequal accepted stakes use value-weighted chances. No promotional username bonus, administrator selection or test controller changes a normal round's result.

The server publishes a SHA-256 commitment before a round ends, then reveals its seed. The verifier calculates HMAC-SHA-256 using the revealed seed and client-seed:nonce message, reads the first eight hexadecimal digits, divides by 0xffffffff, and compares this roll to the creator's share of the pot. New rounds use a random ten-digit public number as their nonce. Older rounds retain their original stored nonce and are not rewritten.

Trade controls

Steam trading is disabled. Future trade offers require explicit user approval through Steam; acceptance and settlement must be verified. A browser or Steam-client link cannot bypass Steam Guard, trade holds or account restrictions.

Preview records

Test progress may be reset. Sessions expire after 24 hours and can end on service restart. This preview policy is not a substitute for the operator's production terms, eligibility checks or legal review.

Connections

Preferences

Preview privacy

This preview stores your display name, your test rounds and essential session cookies. Public lobby names and game results are visible to other visitors. Do not enter private information.

Preferences stay in this browser. When enabled, Steam sign-in reads your own inventory without moving items. Sign-in happens on Steam; this preview never asks for your Steam password.

Preview sessions expire after 24 hours. Game records remain until the operator resets the preview database; sessions currently end when the service restarts.

ACCOUNT SETUP

Set your Steam trade URL

Save the trade URL for the Steam account you are signed into.

Find my Steam trade URL

Saving this setting does not send a trade. Real item transfers are not enabled.

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