Quick answer
5-Line Bonus 21 is a Novomatic (Greentube) slot with medium volatility. It uses 5 paylines with wild symbols.
Key specs
- Volatility
- Medium
- Grid
- 3 reels
- Pays
- 5 paylines
- Jackpot
- None
Not published by the provider: RTP, max win, bet range
Top-rated casinos (check the game is available)
We haven't confirmed which partner carries this game.
- Aurivo Casino100% up to $1,000 + 200 Free Spins30x bonusGet 200 spins + 100% at Aurivo Casino (opens in new tab)
18+. New customers. Min dep $20. 30x bonus wagering. Max bet $5. 30 days. 200 spins on Book of Dead at $0.20. Credited in daily batches of 20 over 10 days. Full T&Cs apply.
Key terms
18+. New customers only. Min deposit $20. 30x bonus wagering requirement. Max bet $5 while wagering. Free spins on Book of Dead at $0.20 per spin. Spins credited in daily batches of 20 over 10 days. Offer valid 30 days. Full T&Cs apply. Please gamble responsibly.
- Velmora150 No-Wager Free Spins Keep every winNo wageringClaim 150 no-wager spins at Velmora (opens in new tab)
18+. New customers. Min dep $20. No wagering. 7 days. 150 spins on Big Bass Bonanza at $0.10. Full T&Cs apply.
Key terms
18+. New customers only. Min deposit $20. No wagering on winnings. Free spins on Big Bass Bonanza at $0.10 per spin. Offer valid 7 days. Full T&Cs apply. Please gamble responsibly.
- Kronos Royale200% up to $2,000 + 10% weekly cashback40x bonusGet 200% bonus at Kronos Royale (opens in new tab)
18+. New customers. Min dep $50. 40x bonus wagering. Max bet $10. 60 days. Full T&Cs apply.
Key terms
18+. New customers only. Min deposit $50. 40x bonus wagering requirement. Max bet $10 while wagering. Cashback: 10% of net casino losses each week (Monday to Sunday), paid as cash with no wagering every Monday, up to $500 a week. Offer valid 60 days. Full T&Cs apply. Please gamble responsibly.
Game availability varies by casino and country.
Themes:
How to play 5-Line Bonus 21 (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.
5-Line Bonus 21 is played on a 3 reels grid with 5 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 5-Line Bonus 21 guide: how winnings work, 1 feature and 2 strategy tips
- Your stake plan: a $50 budget → about $0.25 a spin (medium volatility)
- 1 feature explained: wild symbols
- Stake plans for $20 to $250 budgets
- Strategy tips and a session planner for 5-Line Bonus 21
Free · no card · 18+ only
Never sold · export or delete any time · What do members get?
How winnings work (members only)
How wins are paid and capped
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. Check the in-game paytable for what each symbol pays.
Features explained (members only)
1 feature explained: wild symbols
Wild symbols
Wilds substitute for regular paying symbols to help complete winning combinations. They do not normally replace scatter or bonus symbols.
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.
1 more tip and a session planner
- 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 5-Line Bonus 21.
| Budget | Stake a spin | Bet range | Average cost of 200 spins |
|---|---|---|---|
| $20 | $0.10 | Bet range not published | RTP not published |
| $50 | $0.25 | Bet range not published | RTP not published |
| $100 | $0.50 | Bet range not published | RTP not published |
| $250 | $1.25 | Bet range not published | RTP not published |
Averages only: a short session can end far above or below them. Set a loss limit before you play.
Questions
Frequently asked questions
Who makes 5-Line Bonus 21?
5-Line Bonus 21 is developed by Novomatic (Greentube).
Is 5-Line Bonus 21 high volatility?
5-Line Bonus 21 is rated medium volatility. Medium volatility balances hit rate and win size.
Can I play 5-Line Bonus 21 for free?
Not on GambGenius at the moment: we don't list an official Novomatic (Greentube) demo of 5-Line Bonus 21.
Does 5-Line Bonus 21 have a bonus buy?
No bonus buy is listed for 5-Line Bonus 21 in the sources we checked.
Where this data comes from
- greentube.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 © Novomatic (Greentube), shown to identify the game.

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