CTHULHU 2
96%
RTP
15,000x
Max Win
- Reels
- 5
- Rows
- 4
- Paylines (up to)
- Cluster Pays
- Min Bet
- 0.1
- Max Bet
- 1000
- Release Date
- October 17, 2026
About this Slot
CTHULHU 2 is an aliens, horror, space and sci-fi themed slot with 5 reels, 4 rows and cluster pays. The game has an RTP of 96%, high volatility and a maximum win of 15,000x.
Cluster Pays awards wins when matching symbols form groups horizontally or vertically adjacent to each other. Cascading Reels removes winning clusters from the board, allowing new symbols to fall into empty spaces and create additional wins on a single spin.
The Tentacle symbol triggers Tentacle Strikes, which upgrades cells on the board up to a x20 multiplier, with a minimum of 1 strike guaranteed. The Double Power symbol also triggers Tentacle Strikes but guarantees a minimum of 2 strikes per spin. The Void Wrath symbol guarantees a minimum of 3 strikes per spin. Only the strongest strike applies to each spin.
Portal scatter symbols do not form clusters. Three Portals trigger the Red Alert Free Spins bonus, awarding 10 free spins. Four Portals trigger the Awakening Free Spins bonus, also awarding 10 free spins. Five or more Portals trigger the Zero Hour Free Spins bonus, awarding 10 free spins. During any free spins mode, one additional Portal adds 1 extra spin, two Portals add 2 extra spins, and three or more Portals add 4 extra spins. In Zero Hour mode, cells start with a x2 multiplier. Marks persist throughout the entire free spins bonus.
Wild Columns appear as full columns of wilds during free spins. Sticky Wild Columns remain on the board and jump to a new position each spin.
The Torn Airlock symbol does not form clusters. Three Torn Airlocks trigger the Boarding bonus.
Buy Features can be toggled on permanently at a chosen price.
CTHULHU 2 Community RTP
Real RTP estimated from rounds contributed by the community, across all uploaders.
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CTHULHU 2 RTP Calculator
CTHULHU 2 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.
CTHULHU 2 Variance Simulator
CTHULHU 2 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
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Play on Stake*Frequently asked questions about CTHULHU 2
An RTP of 96% means CTHULHU 2 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 CTHULHU 2'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 CTHULHU 2. Use the variance simulator above to test a cautious versus an aggressive bankroll and see how often each survives your target number of spins.
