Free spins are where Mustang Money makes or breaks a session. The base game grinds your bankroll slowly. The bonus round is where the multipliers live, where the big numbers show up on screen, and where the math gives you a chance to get ahead. Understanding exactly how the trigger works, what happens during the round, and how the multipliers interact is the difference between informed play and just pressing spin and hoping.
Every version handles free spins differently. I'll cover each one, starting with the original.
Original Mustang Money: Gold Coin Multipliers
How to Trigger
Three or more Mustang Money scatter symbols anywhere on the reels. Position doesn't matter, they pay in any spot. Three scatters also pay 2x your total bet, four pay 10x, and five pay 100x on top of triggering the feature.
What You Get
10 free spins. During these spins, the regular flaming mustang wild only appears on reel 3. That's a restriction compared to the base game, where it shows up on reels 2 through 5. The trade-off: gold coin symbols get added to the reels.
The Gold Coin System
Gold coins only appear on reels 2 and 4 during free spins. They act as wild substitutes, but they also carry multipliers. A coin on reel 2 gives either 1x or 2x. A coin on reel 4 gives 1x, 2x, 3x, 4x, or 5x. The multiplier only applies when the coin is part of a winning combination.
When coins land on both reels and both contribute to the same win, the multipliers multiply together. That's the key mechanic. A 2x from reel 2 and a 5x from reel 4 makes 10x on that win. A base win of 50x suddenly becomes 500x. That's how the 10,000x theoretical max is reached.
In practice, getting both coins on the same spin, both as part of the same winning line, both with their highest multiplier values, is extremely rare. My testing showed an average bonus payout of around 47x total bet across all bonus rounds. Some rounds paid under 10x. One paid 428x.
Retriggers
Three more scatters during free spins add 5 extra games. Retriggers happened in about 23% of my bonus rounds. There's no cap on retriggers that I could find, but triggering more than one in a single bonus is uncommon.
Mustang Money 2: Expanding Sticky Wilds
Different trigger condition here. You need three flaming mustang wilds on reels 2, 3, and 4 simultaneously. No scatter symbols involved. This is harder to hit because the wilds must land on specific reels in the same spin.
You get 10 free spins. Mustang Money tiles (different from the wilds) get added to reels 1 and 5. If a Mustang Money tile lands on both outer reels on the same spin, they expand to cover the entire reel and freeze in place. On your next spin, you have two full columns of wilds on the outside plus fresh symbols in the middle.
No multiplier coins in this version. The payout power comes from having 2 out of 5 reels completely wild, which means almost every payline hits. When the expansion triggers, the single-spin payout can be large. But I've had full 10-spin bonus rounds where the tiles never aligned on both reels.
Mustang Money Super: Two Modes
Three or more scatters trigger the bonus, same as the original. The game randomly assigns you to either Standard Free Spins or Super Free Spins.
Standard mode works like the original: wild locked to reel 3, gold coins on reels 2 and 4 with multipliers up to 2x and 5x respectively. Maximum combined multiplier: 10x.
Super mode replaces the reel 3 wild with golden mustang substitutes that can appear on reel 3. These carry 1x or 3x multipliers. No coins on reels 2 and 4. The max multiplier per win is 3x instead of 10x, but it hits more often because you only need one reel to cooperate.
Both modes give 10 free games with the same retrigger rules (3 more scatters = 5 extra games). Full Super review.
Trigger Frequency Across Versions
~187
Average spins between bonuses (Original)
~300+
Estimated for MM2 (3 wilds on specific reels)
~170
Estimated for Super (100 paylines, scatter-based)
Numbers based on limited testing (300-500 spins per version) and should be taken as rough estimates. Actual frequency will vary by session.
Tips for the Bonus Round
There's no skill element during free spins. The reels spin automatically and the results are determined by the RNG. You can't influence which multiplier a gold coin carries or whether the sticky wilds expand. What you can control is your setup going into the bonus.
On the original and Super versions, playing with all 100 paylines active gives you the most winning combinations per spin during the bonus. If you reduce paylines to lower your bet, you also reduce the number of lines that can benefit from the multiplier coins. The multiplier applies to individual winning lines, so more active lines means more opportunities for the multiplier to matter.
On Mustang Money 2 with its fixed 20 paylines, there's nothing to adjust. Your bet size is the only variable.
Set your overall session budget before you start. The bonus will come when it comes. Increasing your bet to "chase" the bonus faster just drains your bankroll before the feature has a chance to pay off.