Game Mechanic
Card guessing game with progressive multiplier stacking
Step-by-Step Guide
- 1
A card is dealt face-up from a standard deck (Ace low, King high).
- 2
Predict whether the next card will be Higher or Lower than the current card.
- 3
If you're correct, your multiplier increases based on the probability of that guess.
- 4
You can cash out at any point to lock in your accumulated multiplier.
- 5
A wrong guess ends the round and you lose your original bet.
Provably Fair System
The entire sequence of cards is predetermined using HMAC-SHA256(server_seed, client_seed:nonce). Each card in the sequence consumes one float from the hash chain, mapped to a rank (1–13). The full sequence exists before your first guess.
Visit the Fairness Verification page to verify any past round with your seeds.
Getting Started
You don't need an account to try Hi-Lo. Visit the game page and you'll automatically receive 1,000 Gold Coins to play with. No signup, no download, no credit card. If you enjoy the game, create an account to save your progress and earn XP for gameplay unlocks.