Gamdom Originals: every in-house game, RTP and how they work

Gamdom Originals are the in-house games built and run on Gamdom's own engine, rather than licensed from
a slot studio. Gamdom describes them as games "created exclusively by Gamdom" and built around a few
principles: provably fair results, crypto-first betting, high maximum wins and adjustable risk.

Gamdom started in 2016 as a Counter-Strike skins community, and its Originals still show that heritage: Crash, Roulette and Hilo run on shared, numbered rounds, with their hash chains published on Gamdom's Provably Fair page. Alongside them sit single-player games such as Dice, Mines, Plinko, Keno, Limbo and Pocket Dice, a Blackjack table, Twist and the Slot Battles mode.

For players, Originals have three practical advantages over most of the
8,000-game slot catalogue: higher RTP, results you can check yourself, and very wide
bet ranges, from $0.01 up to six-figure maximums on some games.

Crash

A shared multiplier climbs from 1x until it "crashes". Cash out before it does to win your stake times
the multiplier; wait too long and the bet is lost. Auto Cashout sets a target in advance. Maximum bet
$500,000. Full guide: Gamdom Crash.

Roulette

Gamdom's own roulette uses a carousel line of red and black numbers rather than a wheel, with green as
the rare outcome and a progressive jackpot. Maximum bets are $600,000 on red or black and $200,000 on
green. See Gamdom Roulette.

Hilo

A card game where you call higher or lower, or back side bets on red, black, 2–9, J-Q-K-A, K-A, Ace or a
99x Joker. See Gamdom Hilo.

Dice

Pick a number from 0 to 100 and bet that the roll lands over or under it. A lower chance means a higher
multiplier. Risk Mode lets you gamble a win on a single double-or-nothing roll. Maximum bet $200,000.
See Gamdom Dice.

Pocket Dice

Two six-sided dice: choose a total from 2 to 12 and bet over or under it. Risk Mode lets you try to double
a win by guessing a single die. Gamdom lists bets from $0.01 to $2,500 and wins up to $1,000,000 per roll.
See Gamdom Pocket Dice.

Mines

A 5×5 grid with 1 to 24 hidden mines. Each safe tile raises the multiplier; cash out whenever you like.
See Gamdom Mines.

Plinko

Drop a ball through rows of pegs into multiplier slots, with adjustable rows and risk. See
Gamdom Plinko.

Keno

Pick up to 10 numbers from 1 to 40; ten are drawn. Four risk modes: Classic, Low, Medium and High. See
Gamdom Keno.

Limbo

Set a target multiplier and win if the instant result reaches it. See Gamdom Limbo.

Blackjack and Twist

Gamdom's in-house Blackjack has its own verifier code, and Twist is a newer game
where you "spin to fill three circles (Planet, Moon, and Sun)" and can cash out at any point.

Slot Battles

Not a game of chance on its own but a mode: players open the same slot in 1v1, team or group battles and
the best result takes the pot. See Gamdom Slot Battles.

Return to player is a long-run average. A 99% RTP means that over a very large number of bets, about 99
cents of every dollar wagered comes back as winnings. The missing 1% is the house edge. In a single
session you can win or lose far more than 1%; the RTP only shows up over thousands of bets.

For comparison, Gamdom's help centre puts typical slot RTPs at 92–98%, with many modern slots at 94–97%.
An Original at 99% loses money about three to five times more slowly than an average slot, per dollar
wagered.

The Zero Edge slice

Gamdom adds a twist: on the first slice of Originals wagering, 1% comes back instantly as rakeback, so that
portion runs at an effective 100% RTP. Gamdom's help articles disagree on the size of the slice: the King
of the Hill article says the first $5,000, the Originals article the first $50,000, on certain games.
Check your rewards page. That wagering also does not count toward King of the Hill points.

Rewards on top

After that, Originals wagering feeds Gamdom rakeback, Weekly and Monthly Rewards and
Royalty Up levels. Rewards return part of the edge; they never make a 99% game a winning one.

Every Gamdom Original uses the same idea. For each game, Gamdom generates a chain of ten million SHA-256
hashes from a secret seed, publishes the final hash, and then plays the chain backwards, one hash per
game. Each finished game's hash is published, and hashing it once must give the hash of the game before.
Because the chain was fixed in advance, Gamdom cannot change a result after you bet.

Gamdom links sample code for each game that turns a hash into a result: a crash point, a card, a mine
layout, a Plinko path. The provably fair guide explains how to run a check and
what it does not prove.

Most Originals have an Auto mode with a number of bets, stake changes on win or loss, and stop-on-profit
and stop-on-loss limits. Dice and Pocket Dice add Risk Mode, and Keno offers Instant Mode to skip the
animation.

Those tools make it easy to place thousands of bets quickly. Gamdom's maximums are very high, but the
number that matters is your own budget. Set a session limit, keep auto-bet runs short, and use Gamdom's
1, 5 or 8-day self-exclusion if you need a break. The responsible gambling guide
has more.

None of these is a better bet than the others over time. Choose by pace and the kind of swings you are
comfortable with.