Quick answer
Spectra is a Thunderkick slot (2016) with 96.4% RTP, medium volatility and a 2,400x max win. It uses 30 paylines with stacked wilds and respins. An official free demo is available. RTP can vary by casino.
Key specs
- RTP
- 96.4%
- Volatility
- Medium
- Max win
- 2,400x
- Grid
- 5 reels
- Pays
- 30 paylines
- Released
- 25 August 2016
- Jackpot
- None
Not published by the provider: bet range
Casinos with Thunderkick games
- Opalis125% up to $750 + 125 Free Spins35x bonusCarries ThunderkickPlay at Opalis (opens in new tab)
18+. New customers. Min dep $20. 35x bonus wagering. Max bet $5. 21 days. 125 spins on Sweet Bonanza at $0.20. Full T&Cs apply.
Key terms
18+. New customers only. Min deposit $20. 35x bonus wagering requirement. Max bet $5 while wagering. Free spins on Sweet Bonanza at $0.20 per spin. Offer valid 21 days. Full T&Cs apply. Please gamble responsibly.
Check Spectra is in the lobby in your country.
Themes:
Free demo Members
Try Spectra with play money before deciding whether to play for real. Official Thunderkick demos are free for GambGenius members.
How to play Spectra (members only)
Wins are paid when matching symbols land on an active payline, usually left to right starting from the leftmost reel. Your total stake is spread across the lines, and each line win is the line bet multiplied by the symbol's paytable value.
Spectra is played on a 5 reels grid with 30 paylines.
- 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.
The full Spectra guide: how winnings work, 2 features and 3 strategy tips
- Your stake plan: a $50 budget → about $0.25 a spin (medium volatility)
- What 96.4% RTP costs per $100 wagered: $3.60 on average
- 2 features explained: stacked wilds, respins
- Stake plans for $20 to $250 budgets
- 4 slots with the same style and a higher RTP (up to 99%)
- Strategy tips and a session planner for Spectra
Free · no card · 18+ only
Never sold · export or delete any time · What do members get?
How winnings work (members only)
What 96.4% RTP costs per $100 wagered, the 2,400x max win at a $1 stake
The top prize is capped at 2,400x your stake. On a $1 spin that is $2,400; on $0.20 it is $480. When the cap is reached the round usually ends immediately.
What 96.4% RTP means
Expected return = stake × 96.4%
Over $100 of total bets, the long-run average loss is $3.60
RTP is a long-run average across millions of spins. Any single session can finish far above or below it, especially on a medium volatility game.
Features explained (members only)
2 features explained: stacked wilds, respins
Stacked wilds
Wilds appear in vertical stacks covering several positions on a reel, which can connect wins across many lines at once.
Respins
Selected reels or the whole grid spin again without a new stake, usually triggered by a specific symbol combination or near-miss feature.
Strategy tips (members only)
- Size your stake to the volatility. Medium volatility balances hit rate and win size. Expect dry spells between features, but not extreme swings. A simple rule: bring at least 200 spins' worth of budget, so a $50 budget suggests a stake of about $0.25.
2 more tips and a session planner
- Bonus wagering: at 96.4% RTP, clearing $1,000 of wagering costs about $36.00 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 volatility we suggest a budget of at least 200 spins. This is what that means for Spectra.
| Budget | Stake a spin | Bet range | Average cost of 200 spins |
|---|---|---|---|
| $20 | $0.10 | Bet range not published | $0.72 |
| $50 | $0.25 | Bet range not published | $1.80 |
| $100 | $0.50 | Bet range not published | $3.60 |
| $250 | $1.25 | Bet range not published | $9 |
Averages only: a short session can end far above or below them. Set a loss limit before you play.
Same style, better RTP (members only)
4 slots with the same style and a higher RTP (up to 99%)
Slots with the same mechanic (paylines) and volatility (medium) as Spectra, with a higher published RTP. Casinos can still run lower versions of any of them.
Questions
Frequently asked questions
Who makes Spectra?
Spectra is developed by Thunderkick and was released in 2016.
What is the RTP of Spectra?
The default RTP of Spectra is 96.4%.
Is Spectra high volatility?
Spectra is rated medium volatility. Medium volatility balances hit rate and win size.
What is the max win on Spectra?
The maximum win on Spectra is 2,400x your stake, which is $2,400 on a $1 spin.
Can I play Spectra for free?
Yes. GambGenius members can play the official Thunderkick demo of Spectra 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 Spectra have a bonus buy?
No bonus buy is listed for Spectra in the sources we checked.
Where can I play Spectra?
Opalis carries Thunderkick games. Check Spectra 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
- thunderkick.com Provider
- slotcatalog.com Slot database
Specs come from the provider's own site and 1 independent slot database. Casinos can run lower-RTP versions, so always check the game rules before you play.
Game artwork © Thunderkick, shown to identify the game.
