Every video poker machine uses a Random Number Generator (RNG) to determine which cards you're dealt. Understanding how this works — and what it means for your play — eliminates common misconceptions and helps you focus on what actually matters: strategy and pay table selection.
The Basic Process
- The RNG runs continuously. Even when nobody is playing, the RNG algorithm cycles through numbers millions of times per second.
- You press Deal. The exact instant you press the button, the RNG's current output is captured.
- Numbers map to cards. The captured numbers are translated into specific cards from a virtual 52-card deck (or 53 for Joker Poker).
- All cards are determined at once. Both your initial 5 cards and the replacement cards for any discards are determined at the moment you press Deal — not when you press Draw.
The last point surprises many players. When you choose which cards to hold, the replacement cards are already determined. You're not "drawing from a deck" in real time — you're revealing cards that were assigned at the Deal.
Why This Matters (And Why It Doesn't)
It matters for understanding fairness. The RNG ensures that every card position in the virtual deck is equally likely. You have the same probability of being dealt a Royal Flush as a physical deck would give you: approximately 1 in 650,000 for any specific Royal, or about 1 in 40,000 for any Royal Flush.
It doesn't matter for strategy. Whether the cards are determined at Deal or at Draw doesn't change the probabilities. The optimal hold decision is the same either way. The RNG's mechanics are invisible to the player — all you see is the same 52-card poker game.
What the RNG Does NOT Do
It doesn't track your history. The machine doesn't know or care that you haven't hit a Royal in 80,000 hands. Each deal is independent.
It doesn't adjust for your bet size. On a regulated machine, the cards dealt to a $0.25 player are generated by the same RNG process as the cards dealt to a $25 player.
It doesn't "cycle" through predetermined outcomes. The RNG doesn't have a fixed list of results it works through. Each deal is generated independently.
It doesn't respond to time of day, day of week, or player behavior. The machine doesn't deal worse cards at 2 AM or better cards on weekdays.
The Practical Takeaway
The RNG ensures that video poker is a mathematically fair card game. A 9/6 Jacks or Better machine deals from a fair deck with known probabilities. Your job is straightforward:
- Find the best pay table available
- Play optimal strategy for that pay table
- Have a bankroll that can handle normal variance
- Ignore everything else — hot machines, cold machines, "due" Royals, lucky seats
The math is fixed. The randomness is real. Your only edge is knowing the correct strategy and finding the best game.
For more on how VP fairness is tested, see our GLI-11 standards article.