How Crash Games Work: Rules, Odds, and Payouts

The Core Mechanic: Pre-Sampled Outcomes

Containment Span uses twelve independent steps, each left or right with probability one half. The sequence is sampled at the start of each round and revealed one step per second. Include the starting position zero when finding the largest and smallest positions. Final reward R is the square of the span: R = (maximum − minimum)². The complete 4,096 equally likely paths have mean reward 24.0625.

At a revealed prefix, collection value Q = 0.97 × E[R given that prefix] / 24.0625. The implementation enumerates the remaining paths exactly. The price can rise or fall and collection pays stake × Q, including the stake component. Manual collection is allowed initially at 0.97 and after any revealed step. Step 12 automatically settles. The minimum terminal reward is 1, so this particular span game cannot reach a zero quote; an alternating path still returns only about 0.0403 times the stake and loses most of it.

Understanding RTP and House Edge

The quote is a finite conditional-expectation process. Averaging the two equally likely next-step prices gives the current price. That property explains the exact 97% theoretical return for any stopping policy using only revealed information; it does not give a profitable strategy. Opening collection of a 20-coin stake returns 19.4 coins before whole-coin credit and carried fractional change. At the end, an all-right path has span 12 and quote 0.97 × 144 / 24.0625, approximately 5.8051. An alternating path has span 1 and quote approximately 0.0403. Both paths have probability 1/4,096. Theoretical return is an average, not a guaranteed refund.

Automatic collection and event order

Choose manual collection or a quote threshold of 1.2, 1.5, 2, 3 or 5 before starting. Automatic collection settles at the first revealed quote at or above that threshold and pays the actual quote, including an upward jump. If the threshold is never reached, the last step settles automatically. Changing the threshold or stake during a round is disabled. Manual collection first processes every step already due at the current timestamp, so it cannot recover an earlier price after a late frame.

Stored virtual wallet

The demo wallet starts at 1,000 virtual coins in a new browser profile. Balance and fractional payout change remain in localStorage after reloading. If the balance falls below 10 and no round is running, Restore balance sets it to 1,000; it does not add 1,000. Clearing this site’s stored browser data removes the wallet. Ordinary cache clearing may leave localStorage intact. Coins have no cash value and there are no prizes.

Setting Limits and Responsible Play

Choose a time limit and a number of rounds before starting, then take breaks and stop at that limit. Do not chase lost virtual coins or infer a future outcome from recent results. This game is for adults aged 18 or over. Its mathematical return is not a promise for a session. If play feels difficult to control or affects daily life, stop and seek help from a qualified local professional or a trusted person.

Legality and Jurisdiction

Check the legal entity, the exact domain covered by any claimed licence and the current status in the regulator’s own register. A badge, encryption claim or attractive interface does not establish licensing, lawful availability or protection of funds. This guide has not verified those details for SCP 123 and cannot give a legitimacy verdict. Avoid submitting identity documents or payments to an unverified recipient. This page is not a route to an operator account.