Quick answer
Dark Vortex is a Yggdrasil slot (2018) with 97% RTP and medium–high volatility. It uses ways to win with bonus buy. An official free demo is available. RTP can vary by casino.
Key specs
- RTP
- 97%
- Volatility
- Medium–high
- Pays
- Ways to win
- Released
- 24 October 2018
- Jackpot
- None
Not published by the provider: max win, grid, bet range
Casinos with Yggdrasil games
- Lunaro100% up to $300 + 100 Free Spins25x bonusCarries YggdrasilPlay at Lunaro (opens in new tab)
18+. New customers. Min dep $10. 25x bonus wagering. Max bet $5. 30 days. 100 spins on Gates of Olympus at $0.20. Full T&Cs apply.
Key terms
18+. New customers only. Min deposit $10. 25x bonus wagering requirement. Max bet $5 while wagering. Free spins on Gates of Olympus at $0.20 per spin. Offer valid 30 days. Full T&Cs apply. Please gamble responsibly.
Check Dark Vortex is in the lobby in your country.
Free demo Members
Try Dark Vortex with play money before deciding whether to play for real. Official Yggdrasil demos are free for GambGenius members.
How to play Dark Vortex (members only)
Instead of fixed lines, matching symbols on adjacent reels pay in any position, starting from the leftmost reel. The more matching symbols there are on each reel, the more ways the combination pays.
Dark Vortex pays with ways to win.
- Set your stake. Choose your total bet per spin. Wins are paid as multiples of this stake.
- Check the paytable. Open the game's info screen to see what each symbol pays and the exact rules for this version.
- Spin. Each spin's result is decided by a certified random number generator, independent of previous spins.
- Optional bonus buy. Where permitted, pay a fixed price to start the bonus directly.
The full Dark Vortex guide: how winnings work, 1 feature and 5 strategy tips
- Your stake plan: a $50 budget → about $0.20 a spin (medium–high volatility)
- What 97% RTP costs per $100 wagered: $3.00 on average
- 1 feature explained: bonus buy
- Bonus-buy risk breakdown
- Stake plans for $20 to $250 budgets
- 2 RTP versions compared: 97%, 96.5%
- 4 slots with the same style and a higher RTP (up to 97.15%)
- Strategy tips and a session planner for Dark Vortex
Free · no card · 18+ only
Never sold · export or delete any time · What do members get?
How winnings work (members only)
What 97% RTP costs per $100 wagered
What 97% RTP means
Expected return = stake × 97%
Over $100 of total bets, the long-run average loss is $3.00
RTP is a long-run average across millions of spins. Any single session can finish far above or below it, especially on a medium–high volatility game.
Features explained (members only)
1 feature explained: bonus buy
Bonus buy
Lets you pay a fixed multiple of your stake to enter the bonus feature straight away instead of waiting for it to trigger. It raises variance considerably and is not available in every country (it is banned in the UK).
Strategy tips (members only)
- Size your stake to the volatility. Medium-to-high volatility means longer gaps between meaningful wins, with most of the return concentrated in features. Use smaller stakes relative to your budget. A simple rule: bring at least 250 spins' worth of budget, so a $50 budget suggests a stake of about $0.20.
4 more tips and a session planner
- Check which RTP version you're playing. Yggdrasil offers this game at 97%, 96.5%. Open the game rules at your casino and prefer sites running the 97% version.
- Treat bonus buys as high-risk. Buying the feature concentrates your budget into a few large-variance rounds. Many results return less than the price paid. Read our bonus buy guide first.
- Bonus wagering: at 97% RTP, clearing $1,000 of wagering costs about $30.00 on average. Check the bonus terms, as some casinos exclude specific games. Run your numbers in the wagering calculator.
- Set limits before you spin. Decide your loss limit and session time in advance and stop when you reach either. No pattern or betting system changes the outcome of a spin.
More on this in slot RTP and volatility explained and bankroll management.
Does it fit your budget? (members only)
Stake plans for $20 to $250 budgets
For medium–high volatility we suggest a budget of at least 250 spins. This is what that means for Dark Vortex.
| Budget | Stake a spin | Bet range | Average cost of 250 spins |
|---|---|---|---|
| $20 | $0.08 | Bet range not published | $0.60 |
| $50 | $0.20 | Bet range not published | $1.50 |
| $100 | $0.40 | Bet range not published | $3 |
| $250 | $1 | Bet range not published | $7.50 |
Averages only: a short session can end far above or below them. Set a loss limit before you play.
RTP versions (members only)
2 RTP versions compared: 97%, 96.5%
Yggdrasil supplies Dark Vortex in 2 RTP versions and each casino chooses which one to run. Over $1,000 of bets, the 96.5% version costs about $5 more on average than the 97% version.
| Version | Average cost per $100 wagered | Extra vs best |
|---|---|---|
| 97% (best) | $3.00 | — |
| 96.5% | $3.50 | +$0.50 |
Open the game's rules or info screen at your casino to see which version it runs.
Seen a different version at a casino? How member RTP reports work
Same style, better RTP (members only)
4 slots with the same style and a higher RTP (up to 97.15%)
Slots with the same mechanic (ways to win) and volatility (medium–high) as Dark Vortex, with a higher published RTP. Casinos can still run lower versions of any of them.
Hot Shots97.15% RTP · +0.15 pts
Shaolin Spin97.15% RTP · +0.15 pts
Mystery Heist97.12% RTP · +0.12 pts
Golden Avalon Hold and Win97.1% RTP · +0.1 ptsQuestions
Frequently asked questions
Who makes Dark Vortex?
Dark Vortex is developed by Yggdrasil and was released in 2018.
What is the RTP of Dark Vortex?
The default RTP of Dark Vortex is 97%. Yggdrasil also supplies versions at 96.5%, so check the game's info screen at your casino.
Is Dark Vortex high volatility?
Dark Vortex is rated medium–high volatility. Medium-to-high volatility means longer gaps between meaningful wins, with most of the return concentrated in features.
Can I play Dark Vortex for free?
Yes. GambGenius members can play the official Yggdrasil demo of Dark Vortex free on this page. It uses play money only, so demo wins can't be withdrawn, and it is for players aged 18 and over.
Does Dark Vortex have a bonus buy?
Yes. Dark Vortex includes a bonus buy option, although it is unavailable in some countries such as the UK.
Where can I play Dark Vortex?
Lunaro carries Yggdrasil games. Check Dark Vortex is in the lobby in your country before you sign up. 18+ · New customers · T&Cs apply. Availability varies by country.
Where this data comes from
- yggdrasilgaming.com Provider
Specs are as published by the provider. Casinos can run lower-RTP versions, so always check the game rules before you play.
Game artwork © Yggdrasil, shown to identify the game.
