A launch into space instead of a runway take-off
CosmoX came out on 12 November 2024 and opened Onlyplay's so-called X line. GoalX, ChiX and other titles followed, sharing the same core under different artwork. The space theme is just packaging; underneath runs the classic crash principle.
The multiplier grows from the start of the round and the flight breaks off at a random moment. Your task is to cash out before that happens. The developer describes it simply as cashing out before the crash and promises nothing more.
One practical point. In the Dukat.bet lobby, CosmoX is filed under the Slots label, not Instant, and it has no demo there. So don't look for it among the instant games; type the name into search or use the Onlyplay provider filter.
The seconds of one flight, broken into steps
A CosmoX round is short, so have the order of steps in your head before your first stake:
- Set the amount. While no round is running, you adjust the stake in the control panel.
- Launch. The ship takes off and the multiplier starts to grow.
- Decision window. The cash-out button is open for the whole flight. The longer you wait, the more you could win, but the closer the end may be.
- Result. Cashing out before the crash pays your stake times the current multiplier. A crash before cash-out means the stake is lost.
- Verification. After the round you can view the data that lets you check its result.
The developer's game page does not say how many bets CosmoX allows at once or which automatic features it has. If auto cash-out or repeat bets interest you, open the in-game rules, which describe exactly the version you are playing.
High volatility and a 10,000× cap: what follows
Onlyplay labels CosmoX a high-volatility game. In practice, round results vary sharply: many flights end low and high multipliers are rare. The 10,000× cap is a theoretical ceiling, not something to plan around.
The 97% RTP describes a long-run average. Over hundreds of rounds, your actual result can stray from it up or down, often noticeably. No order of cash-outs or target multiplier changes that.
Illustrative example (not Dukat.bet parameters): cashing out every time at 1.5×, you win more often, but little. If you wait for 10×, most rounds end in a loss and one win has to cover the whole streak.
So you don't set risk through game settings but through your own discipline: stake size, target multiplier and how many rounds you allow yourself. With no demo available, go through the rules inside the game before round one and start with an amount whose loss won't throw you.
CosmoX on a single card
| Detail | CosmoX |
|---|---|
| Studio | Onlyplay |
| Format | crash |
| RTP | 97% |
| Max. win | 10,000× |
| Volatility | high |
| Fairness | Provably Fair |
| Size | about 0.75 MB |
| Released | 12 November 2024 |
Source: the developer's official page, checked on 11 October 2026.
Provably Fair means the round's result is locked in advance as a hash and you can compare it after the round. It does not mean a higher RTP or lower risk. We explain the procedure step by step in our text on how to verify a provably fair round. The other X line games and the developer's profile are on the page of the Onlyplay studio.
Three quarters of a megabyte on your phone
The developer says CosmoX weighs about 0.75 MB. On mobile that is a real plus: the game loads fast even on a weak data signal and doesn't strain the phone.
Fast loading does not solve a dropout mid-round, though. If the connection breaks during a flight, you cannot cash out by hand. What happens to the stake then is set by the game rules, so skim them in advance.
The controls are simple: amount, launch, cash-out. Everything is within thumb's reach and nothing needs installing.
One tip from practice: on a phone you play faster than at a computer, because the game is always at hand. Short rounds and a single tap to launch mean that in ten minutes you get through far more rounds than planned. To stay in control, set a number of rounds or a time limit before playing and stick to it, even on a winning run.
Who CosmoX suits and who it may wear out
CosmoX is a good pick for a player who wants crash with a higher developer-stated RTP and a light game for mobile. You will also like it if you care about the provably fair checks that Onlyplay highlights for the X line.
It fits less well if you want to try a game for free first. There is no demo in the Dukat.bet lobby, so your first round is straight away for real money. If you prefer a slower rhythm, look at formats where you decide step by step. How CosmoX compares with Pilot, ChiX or Sugar Daddy is shown in our crash game comparison.
Instant and crash games at Dukat.bet pair with the Instant Bonus – 500% up to 3,000 EUR + 15% Cashback; how these games count towards wagering is in the bonus terms and in our guide to instant games at the Dukat.bet casino.