Crash game RTP and house edge explained

By · Last updated 31 October 2026

On this page
  1. How the edge is built in
  2. What the edge costs
  3. RTP options and operator settings
  4. RTP is not a session forecast

RTP (return to player) is the percentage of all money wagered that a game pays back over the long run. The house edge is what’s left: 100% − RTP. A crash game with 97% RTP keeps, on average, about 3% of everything wagered on it. It’s the most important number on any crash game page, and the one thing no strategy can change. See How Crash Games Work for the basics.

Kenyan edition: we use KES throughout, starting from a KSh 100 stake. Want the local picture? Read our best crash games in Kenya and M-Pesa deposits guides.

How the edge is built in

In the standard crash formula, crash = max(1, floor(100 × (1 − edge) ÷ (1 − U)) ÷ 100), the edge shows up in two places:

  1. Instant crashes. Roughly edge% of rounds end at 1.00x, before anyone can cash out.
  2. Scaling. Every probability is multiplied by (1 − edge), so P(reach x) = (1 − edge) ÷ x.

What the edge costs

Expected loss = edge × total wagered.

You wager At 97% RTP At 99% RTP
KSh 1,000 KSh 30 KSh 10
KSh 10,000 KSh 300 KSh 100
KSh 100,000 KSh 3,000 KSh 1,000

Because crash rounds are short, totals wagered climb fast. Two points of RTP can be the difference between losing KSh 300 and KSh 100 per KSh 10,000 wagered.

RTP options and operator settings

Some providers ship more than one RTP version and let casinos choose. The same game name can carry different RTPs at different sites. Where a game’s help screen shows the RTP, check it before you play. Our game pages list the provider’s published figures and mark unverified values as “—”.

RTP is not a session forecast

97% RTP doesn’t mean you’ll get KSh 970 back from KSh 1,000 tonight. Individual sessions vary widely, and the simulator shows how wide. RTP describes the average over millions of rounds.

Auto cash out win chance calculator

Win chance
48.5%
Long-run return per Ksh 100.00 bet
-Ksh 3.00
Win rate needed to break even
50.0%

Common targets (3.0%)

TargetWin chanceAbout 1 inLong-run return per Ksh 100.00 bet
1.20x80.8%1.24-Ksh 3.00
1.50x64.7%1.55-Ksh 3.00
2.00x48.5%2.06-Ksh 3.00
3.00x32.3%3.09-Ksh 3.00
5.00x19.4%5.15-Ksh 3.00
10.00x9.70%10-Ksh 3.00
100x0.97%103-Ksh 3.00

Top crash games

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Frequently asked questions

What is a good RTP for a crash game?

Crash games usually sit in the high-90s, which is generous compared with many slots. Check each game page, because some providers let casinos pick lower RTP settings.

Does RTP change with my cash-out target?

Not in a standard crash game. The edge applies equally to all targets.

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Daniel Foster

By · Crash Game Maths & Mechanics Analyst

Daniel focuses on the mathematics and mechanics behind crash games. His reviews examine RTP disclosures, volatility, multipliers, game mechanics and the mathematical principles behind different crash titles.

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