The house edge is the built-in mathematical advantage a casino holds on every game. A 5% house edge means the casino expects to keep $5 for every $100 wagered over time. Duel Originals have 0% house edge — the casino takes nothing from your wagers. Combined with VIP rakeback, this creates a net positive expected value for players.
The house edge is the percentage of each wager that the casino expects to keep as profit over an infinite number of rounds. It represents the built-in mathematical advantage built into every game's payout structure. The house edge ensures casino profitability regardless of individual session outcomes. Formula: House Edge = 100% − RTP.
How House Edge Works
House edge is built into game payout structures. Here's the classic example — American Roulette:
- The wheel has 38 slots: 1–36 (18 red, 18 black), 0, and 00
- A bet on "red" pays 1:1 (double your bet)
- True probability of winning: 18/38 = 47.37%
- Expected value per $1 bet: (18/38 × $1) − (20/38 × $1) = −$0.0526
- House edge: 5.26%
The casino pays as if there were no 0 or 00, but the presence of these slots skews the probability in the house's favor. This is the fundamental mechanism behind all casino house edges.
House Edge Impact Over Time
| Game | House Edge | Expected Loss | Remaining from $10,000 Wagered |
|---|---|---|---|
| Duel Originals | 0% | $0 | $10,000 |
| Blackjack (perfect strategy) | 0.5% | $50 | $9,950 |
| European Roulette | 2.7% | $270 | $9,730 |
| American Roulette | 5.26% | $526 | $9,474 |
| Average Video Slot | 5% | $500 | $9,500 |
| High House Edge Slot | 10% | $1,000 | $9,000 |
| Keno | 25% | $2,500 | $7,500 |
Why Duel Originals Have 0% House Edge
Duel's decision to operate Originals at 0% house edge is a deliberate business model choice. Rather than profiting from game outcomes, Duel generates revenue through:
- The spread on rakeback vs. operational costs
- Overall platform growth driven by the attractive reward structure
- Non-Originals games (slots, live casino) which carry standard house edges
This creates a mutually beneficial arrangement: players get mathematically fair games (and positive EV with rakeback), while Duel drives high wagering volume through the loyal VIP player base.
0% House Edge + Rakeback = Positive EV
The combination is unique in the casino industry:
Net EV = Game EV + Rakeback
Originals: EV = 0% + Rakeback Rate = Positive for all VIP levels
Comparing House Edges: Casino Game Breakdown
| Game | Variant | House Edge | Notes |
|---|---|---|---|
| Crash | Duel Original | 0% | Provably fair |
| Dice | Duel Original | 0% | Provably fair |
| Mines | Duel Original | 0% | Provably fair |
| All Originals | Duel Original | 0% | Provably fair |
| Blackjack | Single deck, optimal strategy | 0.1–0.5% | Varies by rules |
| Baccarat | Banker bet | 1.06% | Before commission |
| Craps | Pass/Don't Pass | 1.41% | Best craps bet |
| Roulette | European (single 0) | 2.7% | French rules lower it |
| Roulette | American (double 0) | 5.26% | Avoid 5-number bet |
| Video Slots | Industry average | 4–6% | Ranges 2–15%+ |
| Progressive Slots | Pre-jackpot | 10–15% | Higher during jackpot |
| Keno | Casino Keno | 20–35% | Highest house edge |