World Infection
96.69%
RTP
15,000x
Max Win
- Min Bet
- 0.1
- Max Bet
- 1000
- Release Date
- March 23, 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
World Infection is a zombie sci-fi slot from Krispy Games with an RTP of 96.69%, medium volatility and a maximum win of 15,000x.
The Free Attacks bonus round triggers when three or more Red Flare scatter symbols land anywhere on the grid. Three Red Flares award 10 free spins, four Red Flares award 15 free spins, and five Red Flares award 25 free spins. Free Attacks can retrigger during the feature.
Strain Zero is a wild symbol that substitutes for all symbols except the Red Flare scatter. Strain Zero also pays on its own across consecutive positions on the reels. During the Free Attacks bonus round, each Strain Zero win receives a random multiplier, and these multipliers can combine on the same winning line to increase payouts further.
Red Flare scatters pay from any position on the grid, regardless of payline positioning. The game displays wins across a standard 5x3 grid layout, with paylines highlighted after each spin to show winning combinations clearly.
World Infection Community RTP
Real RTP estimated from rounds contributed by the community, across all uploaders.
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World Infection RTP Calculator
World Infection has a theoretical RTP of 96.69%. Its volatility is Medium, so expect a balanced mix of dry spells and mid-size hits. 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.
World Infection Variance Simulator
World Infection sessions can swing far from its 96.69% average - its volatility is rated Medium. 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 World Infection
An RTP of 96.69% means World Infection is built to pay back around 96.69 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 World Infection's house edge is about 3.31% of everything you wager - roughly 3.31 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 96.69% 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 World Infection. Use the variance simulator above to test a cautious versus an aggressive bankroll and see how often each survives your target number of spins.
