Underboss
96%
RTP
15,000x
Max Win
Bonus buy options
- Street Deal2x bet
- Power Move5x bet
- Underboss Mode200x bet
- Min Bet
- 0.1
- Max Bet
- 1000
- Release Date
- April 2, 2026
A Stake Engine title, so there is no maker demo to embed here. On Stake it can be played without an account as Demo (Fun Play).
About this Slot
Underboss is a crime and mafia-themed slot from Slot Magic with an RTP of 96%, high volatility and a maximum win of 15,000x.
Cluster Pays requires four or more matching symbols in horizontal or vertical formation to create winning combinations. The Wild Symbol substitutes for all symbols except the Scatter, forming clusters as part of winning patterns.
The Scatter Symbol triggers Free Spins when three, four, five or six land. Three Scatters award 10 Free Spins, four award 12 Free Spins, five award 15 Free Spins and six award 18 Free Spins. During Free Spins, extra Scatters retrigger the feature, adding 5, 8, 10 or 12 additional spins depending on the number landing.
Cascading Reels activates after each winning cluster: winning symbols drop and new symbols fall to fill empty spaces, allowing consecutive wins from a single spin. Tumble Win builds a multiplier throughout the cascade sequence. A random multiplier between 2x and 50x can appear during base game play.
Grid Multiplier activates during the Free Spins round. Each winning position starts with a 1x multiplier, which increases by 1 for each repeat win at that same position. These multiplier values persist throughout the entire Free Spins feature.
Three bonus buy options are available. Street Deal costs 2x the bet and grants access to an immediate bonus stage. Power Move costs 5x the bet. Underboss Mode costs 200x the bet and provides direct entry to the highest bonus tier.
Underboss Community RTP
Real RTP estimated from rounds contributed by the community, across all uploaders.
No measurements for this slot yet.
Your archive would be the first.
Underboss RTP Calculator
Underboss has a theoretical RTP of 96%. Its volatility is High, so expect long dry spells punctuated by rare, large multipliers. Its win potential is capped at 15,000x your stake. Use the calculator below to estimate your expected return, variance range and risk of ruin over any number of spins.
Underboss Variance Simulator
Underboss sessions can swing far from its 96% average - its volatility is rated High. The simulator runs many virtual bankroll runs to estimate the bust rate, typical drawdown and best/worst outcomes over a set number of spins - compare a cautious bankroll against an aggressive one.
All Wins
No wins on this slot yet.
Play on Stake*Frequently asked questions about Underboss
An RTP of 96% means Underboss is built to pay back around 96 for every 100 wagered over millions of spins. Any single session can land far above or below that - use the RTP calculator on this page to model your own bet size and spin count.
Over the long run Underboss's house edge is about 4% of everything you wager - roughly 4 lost per 100 staked. Short sessions vary widely; the calculator above shows the expected loss and variance range for your inputs.
Quite a lot. Because wins cluster around rare big hits, your balance can move far from the 96% average in either direction. The variance simulator above shows typical drawdowns, bust rate and best/worst outcomes for your bankroll.
It depends on your bet size and how long you want to play Underboss. Use the variance simulator above to test a cautious versus an aggressive bankroll and see how often each survives your target number of spins.
