Where the volume actually goes
Casino Originals
In-house games with a one percent house edge, sitting next to slots charging four times that. Understanding the difference is the highest value thing on this site.
Originals are the games a casino builds itself rather than licensing from a studio. Crash, Dice, Plinko, Mines, Limbo and their variants. They dominate play at crypto casinos for one reason that has nothing to do with graphics: they are dramatically cheaper to play.
Why they cost less
A slot from a third party studio typically runs a house edge somewhere between three and five percent, and the studio takes a cut of that. An in-house original has no licensing cost, so the operator can run it at one percent and still keep more per bet than it makes on a slot at four.
Your interests and the operator's happen to align here, which is rare enough to be worth noticing.
The arithmetic that matters
Expected loss is turnover multiplied by house edge. A player putting $100,000 through a 1% game expects to lose $1,000. The same turnover through a 4% game expects to lose $4,000.
At any real volume this is the single largest cost you control, and it is decided entirely by which game you open. The full RTP comparison
The games
Plinko
A ball drops through a triangular field of pegs into a row of multiplier buckets. Risk level and row count change the payout distribution.
Dice
Pick a number and bet whether the roll lands above or below it. The slider sets win chance and the multiplier follows from it.
Crash
A multiplier climbs from 1x and stops at a random point. Cash out before it stops or lose the bet.
Mines
Uncover tiles on a grid while avoiding hidden mines. Each safe tile raises the multiplier. Cash out any time.
Limbo
Set a target multiplier and a random result is drawn. Win if the result exceeds your target.
Hilo
Predict whether the next card is higher or lower than the current one. Correct calls compound the multiplier.
Keno
Pick numbers from a grid and a draw is made. Payout depends on how many you matched and how many you picked.
Wheel
A wheel divided into multiplier segments spins to a random stop. Risk level and segment count change the spread.
Tower
Climb levels by picking a safe tile on each. One wrong pick ends the run. Cash out at any level.
They are mostly the same engine
Almost every operator in our ranking runs the same provably fair model: a hashed server seed committed before play, combined with a client seed you control and an incrementing nonce, hashed with HMAC SHA256 to produce each result.
Stake built the reference implementation and the rest of the market followed it. The practical consequence is that if you can verify a result at one casino you can verify it at almost any of them, and the games themselves are far more similar than the branding suggests. How verification actually works
What Originals are not
A low house edge is still a house edge. 99% RTP means the game expects to keep one percent of everything you put through it, forever. It is cheaper, not free, and cheaper play often turns into more play, which is how a lower edge produces the same loss.
Even the genuine zero edge allowances at Duel and Gamdom do not make you likely to profit, because variance does not care about expectation. The honest version of the RTP argument
Gambling carries a negative expected return. Over enough bets the house edge wins by design, and no ranking on this site changes that. If it has stopped being a choice, free confidential help exists: Peluuri in Finland, Stödlinjen in Sweden, BZgA in Germany, and GamCare internationally.
Related
Originals RTP compared
Published return to player across every tracked operator.
Provably fair
What it proves, and the much larger thing it does not.
Originals vs slots
The cost difference, worked through with numbers.
Table games and slots
Blackjack, baccarat, roulette and the slot library.