How slot wins are calculated
1. Basis of payment calculation
1. Paytable
Lists all symbol combinations and their respective payout factors (bet multipliers).
Format: symbols + number of coincidence → multiplier (for example, 3×A → ×5, 4×A → ×20, 5×A → ×100).
2. Rate
Total bet = coin value × number of coins per line × number of active lines.
All calculations of payments come from the total rate ("bet per spin").
Basic pay formula
$$
\ text {Payout} =ext {Spin bet }\;imes\;ext {Combination factor}
$$
2. Accounting for Payment Lines and Methods
1. Classic Lines (Paylines)
The payout is considered for each active line, taking into account the first match on the left (or on the right, if declared).
If there are several different winning combinations on the line, the largest one is taken.
2. Ways / Megaways
The number of payout methods is determined by the number of symbols on adjacent reels.
Any match of N identical characters on N consecutive reels gives a payoff according to the table.
3. Cluster Pays
The payout is charged for a "cluster" (group) of N identical symbols in adjacent cells.
A multiplier is given for each cluster size threshold.
3. Bonus symbols and freespins
1. Scatter
Payout for any number of Scatter regardless of lines:
When the required number of Bonus-symbols is drawn, a fixed amount or percentage of the bet is calculated.
During the bonus round, winning combinations may have increased odds.
4. Mechanics of calculating spin wins
1. Result generation
RNG produces random positions for each drum.
2. Generating visible symbols
The virtual reels display symbols according to the RNG.
3. Identification of winning lines/clusters
Scans each active link or field for specific combinations or clusters.
4. Calculation and selection of the largest payment
If several matches fall on the same line (for example, two different characters of 3 pieces), the combination is selected that gives a larger coefficient.
5. Sum of payments
Total Spin Payout = total payout of all winning lines/clusters + Scatter/Bonus payouts.
5. Consideration of multipliers and special modes
1. Multipliers in the base game
Wild-multipliers double or triple the payout of the line on which they participate.
2. Frispin multiplicators
In free spins, a multiplier (× 2, × 3 and higher) can be applied to all winnings.
3. Cascade Multipliers (Avalanche)
Each subsequent drop after the cascade increases the payout multiplier by + 1.
6. Example of full calculation
Slot with:
Calculation
The combination is considered to be a 4 × B → × factor of 20.
Line payout = 40 ₽ × 20 = 800 ₽.
If there are no other winning lines, spin total = 800 ₽.
7. Features of calculating a progressive jackpot
1. Fixed rate
A maximum bid is required to participate in the progressive.
2. One-time payment
The jackpot appears regardless of the paytable and is added up to the rest of the winnings.
3. Accounting for all multipliers
The largest prize is added up to the basic line wins.
8. Conclusion
The calculation of winnings in slots is based on strict mathematical rules: a table of payments, the number of active lines or methods, multipliers and accounting for special characters. Understanding the calculation algorithm allows players to estimate the potential return and predict the average gain, and developers to correctly configure RTP and volatility.
1. Paytable
Lists all symbol combinations and their respective payout factors (bet multipliers).
Format: symbols + number of coincidence → multiplier (for example, 3×A → ×5, 4×A → ×20, 5×A → ×100).
2. Rate
Total bet = coin value × number of coins per line × number of active lines.
All calculations of payments come from the total rate ("bet per spin").
Basic pay formula
$$
\ text {Payout} =ext {Spin bet }\;imes\;ext {Combination factor}
$$
2. Accounting for Payment Lines and Methods
1. Classic Lines (Paylines)
The payout is considered for each active line, taking into account the first match on the left (or on the right, if declared).
If there are several different winning combinations on the line, the largest one is taken.
2. Ways / Megaways
The number of payout methods is determined by the number of symbols on adjacent reels.
Any match of N identical characters on N consecutive reels gives a payoff according to the table.
3. Cluster Pays
The payout is charged for a "cluster" (group) of N identical symbols in adjacent cells.
A multiplier is given for each cluster size threshold.
3. Bonus symbols and freespins
1. Scatter
Payout for any number of Scatter regardless of lines:
- $$
- \ text {Payout} =ext {Spin Bet }\;imes\;ext {N Scatter Factor}
- $$
- Additionally, it launches freespins, in which payments are multiplied by individual multipliers.
- 2. Bonus
When the required number of Bonus-symbols is drawn, a fixed amount or percentage of the bet is calculated.
During the bonus round, winning combinations may have increased odds.
4. Mechanics of calculating spin wins
1. Result generation
RNG produces random positions for each drum.
2. Generating visible symbols
The virtual reels display symbols according to the RNG.
3. Identification of winning lines/clusters
Scans each active link or field for specific combinations or clusters.
4. Calculation and selection of the largest payment
If several matches fall on the same line (for example, two different characters of 3 pieces), the combination is selected that gives a larger coefficient.
5. Sum of payments
Total Spin Payout = total payout of all winning lines/clusters + Scatter/Bonus payouts.
5. Consideration of multipliers and special modes
1. Multipliers in the base game
Wild-multipliers double or triple the payout of the line on which they participate.
2. Frispin multiplicators
In free spins, a multiplier (× 2, × 3 and higher) can be applied to all winnings.
3. Cascade Multipliers (Avalanche)
Each subsequent drop after the cascade increases the payout multiplier by + 1.
6. Example of full calculation
Slot with:
- Bet 2 ₽ per line, 20 lines → 40 ₽ per spin
- Table: 3×B → ×5, 4×B → ×20; Wild without multiplier.
- Game result: 4 × B and 1 Wild fell on line 7 (replaced B).
Calculation
The combination is considered to be a 4 × B → × factor of 20.
Line payout = 40 ₽ × 20 = 800 ₽.
If there are no other winning lines, spin total = 800 ₽.
7. Features of calculating a progressive jackpot
1. Fixed rate
A maximum bid is required to participate in the progressive.
2. One-time payment
The jackpot appears regardless of the paytable and is added up to the rest of the winnings.
3. Accounting for all multipliers
The largest prize is added up to the basic line wins.
8. Conclusion
The calculation of winnings in slots is based on strict mathematical rules: a table of payments, the number of active lines or methods, multipliers and accounting for special characters. Understanding the calculation algorithm allows players to estimate the potential return and predict the average gain, and developers to correctly configure RTP and volatility.
