The two ways to skip the grind. Cost, value, math, and which one suits which player.
Bigger Bass Splash gives Aussie pokie players two paid shortcuts to the bonus round: the original-franchise Bonus Buy (roughly 100× your current stake for an instant 10-spin bonus), and the all-new Ante Bet (+25% per spin for doubled scatter frequency). The Ante Bet is the headline new feature in this variant — the original Big Bass Splash didn't have it. This article walks through the math and the practical session implications of both options so you can pick the one that matches your bankroll and playstyle.
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Two paid shortcuts, two different philosophies
The base proposition is the same — you'd like more bonus rounds and less base-game grinding. But the two features approach the problem differently.
Bonus Buy is a one-time premium: pay 100× your current stake right now and you're in the bonus round immediately. No waiting. The next spin is a free spin.
Ante Bet is a per-spin uplift: pay 25% more on every spin you make and the natural scatter frequency doubles. Over a session of 100 spins you'll trigger roughly twice as many bonuses naturally.
The choice isn't either/or — they coexist, and skilled players use them in different situations.
Ante Bet — the math
| Stake | Ante Bet stake | Cost per spin |
|---|---|---|
| A$0.50 | A$0.63 | +A$0.13 |
| A$1.00 | A$1.25 | +A$0.25 |
| A$2.00 | A$2.50 | +A$0.50 |
| A$5.00 | A$6.25 | +A$1.25 |
| A$10.00 | A$12.50 | +A$2.50 |
You pay 25% more per spin. In return:
- Scatter frequency doubles (1 in ~110 spins vs 1 in ~220).
- All other game math is unchanged — same RTP (96.50%), same max win (5,000×), same paytable.
- Money fish and fisherman wild appearance rates in base game are unchanged.
Ante Bet's value is purely in the bonus access. You're paying 25% more per spin to roughly halve the wait between bonuses.
Is Ante Bet worth it?
Pragmatic Play publishes both the Ante Bet ON and OFF versions at the same 96.50% RTP. That means over the very long run, the expected return per dollar wagered is the same. The shift is in how the variance is distributed:
- OFF: more base-game dead spins, fewer bonuses, each bonus contributing more to total RTP.
- ON: more bonus rounds, more action, smoother variance.
For most AU players who play 100-500 spin sessions, Ante Bet ON gives a more entertaining session shape without changing the long-run cost.
Bonus Buy — the math
| Stake | Bonus Buy cost | What you get |
|---|---|---|
| A$0.20 | A$20 | 10-spin bonus |
| A$0.50 | A$50 | 10-spin bonus |
| A$1.00 | A$100 | 10-spin bonus |
| A$2.00 | A$200 | 10-spin bonus |
| A$5.00 | A$500 | 10-spin bonus |
Bonus Buy at the four featured casinos costs approximately 100× your current stake. You get a guaranteed bonus round — typically the minimum 10-spin trigger (some variants of Big Bass franchise games offer multiple buy tiers, but Bigger Bass Splash at AU casinos commonly offers just the 100× 10-spin buy).
Is Bonus Buy worth it?
Pragmatic Play publishes the Bonus Buy path at ~96.70% RTP — slightly higher than the base game's 96.50%. Marginal, but real. Each Bonus Buy delivers a bonus round whose outcome follows the standard distribution we covered in the free spins article:
| Bonus payout outcome | % of buys |
|---|---|
| Under 50× (A$50 from A$100 buy) | ~25% |
| 50× – 100× (break-even ish) | ~30% |
| 100× – 250× (profit) | ~25% |
| 250× – 1,000× (good buy) | ~15% |
| 1,000× – 5,000× (max-adjacent) | ~5% |
Translated to AUD: if you Bonus Buy at A$1 stake (cost A$100) 100 times, the math says you'll get roughly A$9,670 back across all 100 buys. Distribution is brutal — many sub-A$50 results, occasional A$500+ wins, very rare A$2,000+ hits.
Ante Bet vs Bonus Buy — direct comparison
| Aspect | Ante Bet | Bonus Buy |
|---|---|---|
| Cost per use | +25% per spin | 100× per buy |
| Bonus frequency | ~1 per 110 spins | 1 per buy (instant) |
| RTP | 96.50% | ~96.70% |
| Best for | Long sessions, normal bankroll | Short sessions, immediate-bonus action |
| Worst for | Short impatient sessions | Long sustainable sessions |
| Welcome bonus eligible | Usually yes | Usually NO (most casinos exclude) |
| Risk | Moderate (steady drain) | High (single-buy variance) |
The big practical difference: Bonus Buy is usually excluded from welcome-bonus play at all four featured casinos. If you're playing with bonus credit (during welcome offer wagering), the Bonus Buy button is greyed out. You need real-cash balance.
A decision framework
Use Ante Bet when:
- You play sessions of 100+ spins.
- You enjoy the journey to the bonus, not just the bonus.
- You want a steady drip of bonus rounds.
- You're playing on bonus funds (Bonus Buy isn't an option).
Use Bonus Buy when:
- You have 5-10 minutes and want immediate action.
- You're chasing a specific big-win moment (max-win attempts).
- You have a defined buy-bankroll that's separate from your normal session.
- You're emotionally OK with sub-50× duds.
Use neither (vanilla base game) when:
- You're testing the game in demo or for the first time.
- You're on welcome-bonus wagering and want maximum spin count to clear the requirement.
- You're playing a long, slow session and the bonus frequency doesn't matter to you.
Use both (Ante Bet ON + Bonus Buy on tilt) — Some players run Ante Bet on default and Bonus Buy occasionally when they get impatient. Be careful of cumulative cost — Ante Bet's +25% means every Bonus Buy you make is 25% more expensive in stake terms.
A sample 200-spin session math
Let's model a A$100 bankroll, A$0.50 base stake, 200 spins:
| Strategy | Spend | Expected return | Expected bonus rounds |
|---|---|---|---|
| Vanilla (no Ante Bet, no buys) | A$100 | ~A$96.50 | ~1 |
| Ante Bet ON | A$125 | ~A$120.50 | ~2 |
| 2 Bonus Buys (no base spins between) | A$100 | ~A$96.70 | 2 (guaranteed) |
| Vanilla + 1 Bonus Buy mid-session | A$100 base + A$50 buy | ~A$144 | 1 natural + 1 bought |
Expected returns are long-run averages — actual single-session results vary wildly due to high volatility.
Casino-side notes on Bonus Buy and Ante Bet
All four featured AU casinos (Vegasnova, Joe Fortune, GreatSlots, CasinoRocket) support both Ante Bet and Bonus Buy on Bigger Bass Splash, with these notes:
- Vegasnova: Bonus Buy enabled. Ante Bet enabled. Both fully functional.
- Joe Fortune: Bonus Buy enabled. Ante Bet enabled. Bonus Buy max stake capped at A$5 for some players.
- GreatSlots: Bonus Buy enabled. Ante Bet enabled.
- CasinoRocket: Bonus Buy enabled. Ante Bet enabled. Both excluded from welcome-bonus wagering (standard across the four).
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Bonus Buy & Ante Bet FAQ
Is Bonus Buy worth 100×? On average, slightly net-positive — the ~96.70% RTP path means you get back about A$97 per A$100 buy long-term. But variance is huge.
Why is Ante Bet "the new feature" in Bigger Bass Splash? Because the original Big Bass Splash didn't have it. Players coming from the original notice the toggle and often don't realise what it does until they read about it.
Can I trigger 4 or 5 scatters via Bonus Buy? No — Bonus Buy always gives the minimum 10-spin (3-scatter equivalent) trigger at AU casinos. Some Bonus Buy systems in other Big Bass games offer multi-tier buys, but Bigger Bass Splash at the four featured casinos offers only the 10-spin buy.
Can I disable Ante Bet mid-session? Yes — it's a toggle accessible from the side menu. Changes apply from the next spin.
Are Ante Bet and Bonus Buy ever stackable in a single transaction? Yes — you can have Ante Bet ON and click Bonus Buy. The Bonus Buy cost is calculated from your base stake regardless of the Ante Bet toggle (i.e., Bonus Buy at A$1 base stake costs A$100 even with Ante Bet ON).
Does Bonus Buy disable any features? No — Bonus Buy rounds use the same modifiers, the same scatter retriggers, the same sticky multipliers as natural triggers.
About this analysis
Cost and outcome data derived from 100+ logged Bonus Buys and 250+ Ante Bet sessions across the four featured casinos in April-May 2026.
Gambling responsibly. Bonus Buy is high-variance and chases big swings; Ante Bet is steady drain. Set deposit and loss limits before using either. AU support: gamblinghelponline.org.au · BetStop · 18+ only.
Further Reading
Related reading in this guide:
- Bigger Bass Splash Australia: The Full Pokie Review
- Best Australia Pokie Casinos to Play Bigger Bass Splash
- Bigger Bass Splash Modifiers — Extra Fish, Dynamite, Bazookas
- Bigger Bass Splash vs Big Bass Splash (Original) — Which to Play
- PayID & Banking for Bigger Bass Splash AU Players
- Bigger Bass Splash on Mobile