HILO is a card-prediction game where you call whether each new card will rank higher or lower than the one displayed. It appeals to players who enjoy decision-making built into each spin rather than watching outcomes unfold passively. You make your prediction, a card appears, and if you're right the round continues with a new multiplier applied to your previous one. You can walk away with your winnings after any correct call, or attempt another prediction and risk everything you've built up so far.
At a glance
| Return to player | 97.9–99% |
| What you set | Higher, lower or pass — up to 52 calls |
| Best multiplier | 12.87× per correct call, compounding |
Open HILO at Bethropic — a 0 bet plays the game for free, no download.
How it works
Call whether the next card ranks higher or lower than the one showing. Cards are drawn independently each time rather than dealt from a shoe, so the odds reset every call. Correct calls multiply together until you cash out; one wrong call ends the round.
The mechanic that trips up most players is the all-or-nothing structure. Your multipliers compound beautifully when you're right, but a single wrong call erases the entire round instantly. This means chasing bigger multipliers by extending a winning streak feels rewarding in the moment, yet statistically you're fighting odds that worsen as you go deeper. The payout table reflects this: calling higher on an Ace pays only 1.06×, while calling higher on a King pays 12.87×, because one outcome is far more likely than the other. The temptation to ride a streak as far as possible is built into the game, and that temptation costs money over time.
What it pays
| Card showing | A | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | J | Q | K |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Higher pays | 1.06 | 1.06 | 1.16 | 1.28 | 1.42 | 1.60 | 1.83 | 2.13 | 2.57 | 3.21 | 4.28 | 6.43 | 12.87 |
The odds behind it
- Lower runs the same ladder in reverse.
- Cash out is available after the first call.
The return to player sits between 97.9 and 99 percent, which means for every 100 units wagered across many rounds, you'd expect the game to return somewhere in that range to all players combined. In practice this translates to a house edge of roughly 1 to 2 percent per bet. Over a single session this could mean anything—a lucky streak, a quick loss, or something in between—but across thousands of rounds the math pulls toward that return figure. Each decision you make in HILO changes which bets you're placing and when, but it doesn't change the underlying odds the payout table describes.
Fair by design
- Every round is provably fair: the outcome comes from a server seed, your client seed and a nonce, all shown with the round so you can check the result was fixed before the bet. You can rotate your seed at any time.
- A 0 bet is always allowed, so every original game can be played for free.
- Bet limits are set per coin rather than per game — the same minimum and maximum apply across the originals.
Play HILO · All Bethropic games
Payouts settle within the per-coin maximum profit cap, so the headline multiplier is the ceiling of the game, not of a single bet.