Must-Hit-BySlotMachines
Must-hit-by slot machines are progressive jackpots with a hard ceiling — the number cannot pass a stated maximum without forcing the jackpot to award. The closer the counter climbs to that ceiling, the lower the expected cost to lock in the prize. Because the math is bounded on both sides, must-hit-by progressives are the cleanest, most analyzable form of advantage play on a casino floor and the natural starting point for new advantage players learning to read counters.
How must-hit-by machines work
Every must-hit-by progressive ships with two published numbers: a floor (the reset value) and a ceiling (the must-hit-by amount). On every wager, a small percentage of coin-in is added to the counter. The number rises until a randomly chosen trigger value within the floor-to-ceiling band is crossed, at which point the jackpot pays out and resets to the floor. Crucially, the trigger value cannot exceed the ceiling — if play continues to push the number higher, the jackpot is forced to fire before the cap. For example, a $100-must-hit-by-$500 progressive will always pay out before the number can reach $500.01. Advantage players use the gap between the current number and the ceiling to estimate worst-case spend.
Advantage play tactics for must-hit-by
Compute the midpoint between the current number and the ceiling — that is your expected spend to trigger if the trigger distribution is uniform. Add base-game return and any side-progressives, then compare to the jackpot value to decide go/no-go. Bet at the level required to qualify for the top tier. Walk away the moment a trigger fires (even a smaller tier may reset shared progress). For competing must-hit-by play on the same bank, claim a seat early — once a counter is past breakeven, the seat itself is the asset.
Every Must-Hit-By machine
23 must-hit-by machines on Run the Slots. Tap any title for the full advantage play guide.
88 Fortunes Emperor’s Coins
Ascending Fortunes
Buffalo Link
Play at 1,600+ on the counter
View guide
Coyote Moon Deluxe
Fire Wolf 2
Forest Dragons
Jewel Collection: Dragon
Jewel Collection: Vault
Legend of the 3x 2x Phoenix
Lucky Larry's Lobstermania Deluxe
Magic Wishes
Money Storm Deluxe
Phoenix 888 Dragon
Phoenix Link
Prosperity Pearl
Regal Riches
River Dragons
Rocket Rumble
Stack Up Pays
Tian Ci Jin Lu
Winter of the Dragons
Wolf Queen
Zhao Cai Zhu
Related glossary terms
MHB (Must-Hit-By)
A progressive jackpot forced to trigger before reaching a specified ceiling value. MHB progressives are the most mathematically analyzable form of advantage play because the ceiling creates a known upper bound for expected cost calculations.
Ceiling
The maximum value a must-hit-by progressive can reach before it is forced to pay out. The closer a progressive gets to its ceiling, the higher the expected value of playing that machine.
Floor
The starting or reset value of a progressive jackpot — the lowest point it returns to after a jackpot hit. The distance between the floor and the current counter value indicates how much has been contributed by players since the last hit.
Midpoint Method
A calculation technique for MHB progressives that estimates the breakeven point by finding the statistical midpoint between the current counter value and the ceiling. Assumes uniform trigger distribution — in practice, some games may be biased toward triggering near the ceiling.
Threshold
The specific counter value at which a machine transitions from house-favored to player-favorable. Run the Slots calculates trigger thresholds for every supported machine based on base game return, counter rates, and bonus values.
Trigger
The specific condition that activates a bonus feature or progressive payout. In AP context, the trigger point is the threshold where playing the machine becomes mathematically profitable.
Other mechanics worth scouting
FAQ — Must-Hit-By slot machines
Must-hit-by slot machines are progressive jackpots with a hard ceiling — the number cannot pass a stated maximum without forcing the jackpot to award. The closer the counter climbs to that ceiling, the lower the expected cost to lock in the prize. Because the math is bounded on both sides, must-hit-by progressives are the cleanest, most analyzable form of advantage play on a casino floor and the natural starting point for new advantage players learning to read counters. Every must-hit-by progressive ships with two published numbers: a floor (the reset value) and a ceiling (the must-hit-by amount). On every wager, a small percentage of coin-in is added to the counter.
Look for the visible cues described above — counters, the number, ceiling values, or filled positions. Cross-reference our list of 23 Must-Hit-By machines below to know which titles to scout. Most properties group similar mechanics together, so once you spot one Must-Hit-By machine, additional machines on the same bank are usually the same family.
Compute the midpoint between the current number and the ceiling — that is your expected spend to trigger if the trigger distribution is uniform. Add base-game return and any side-progressives, then compare to the jackpot value to decide go/no-go. Bet at the level required to qualify for the top tier. Walk away the moment a trigger fires (even a smaller tier may reset shared progress). For competing must-hit-by play on the same bank, claim a seat early — once a counter is past breakeven, the seat itself is the asset. Profitability depends on finding machines that are a play during a floor walk and walking away the moment the residual value is harvested. The machines themselves lose by default — the edge comes entirely from selecting the right counter conditions to play through.
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