Collection Bonus Round
Crabby Collector Bonus Round Explained
The Crabby Collector bonus round is where Bullshark Games' collection mechanic earns its name: the Collection Counter carries across spins, Grid Boosters can fire multiple times, and the Global Multiplier stacks instead of resetting. I break down the scatter trigger, what changes versus base game, and why Bonus Buy is worth testing in demo before you commit real money.
Quick answer
- Trigger
- Scatter symbols land in one paid spin — exact counts are in the in-game paytable
- Counter reset
- Base game: every spin. Bonus round: only after a Grid Booster fires
- Global Multiplier
- Base game: resets each spin. Bonus round: accumulates up to 100×
Grid Boosters
In base game, hitting 30, 40 or 50 symbols unlocks boosters once per spin. In the bonus round the counter persists across spins, so you can cross those thresholds multiple times — Remove Low, Add Wilds and Add Global Multiplier chain on top of each other instead of resetting when the spin ends.
Big-win potential
The 15,000× ceiling is not bonus-locked, but sustained multiplier growth is far more likely here. A Tier 3 activation with a stacked Global Multiplier on a long cascade is the realistic path to session-defining hits — not a single lucky cluster in isolation.
How to trigger the bonus round
Crabby Collector uses scatter symbols as the organic entry point — land the required number in a single paid spin and the game transitions into the Collection Bonus Round. Position does not matter on the 6×5 all-scatter grid; only the count in that one spin counts. Bullshark Games lists exact trigger thresholds and any scatter pays in the in-game paytable, so open the info screen before your first session rather than guessing from the underwater art. Bonus Buy offers a parallel path: where your operator enables it, you can purchase direct entry at 100× your current stake and skip the base-game wait entirely. That purchase drops you into the same round with persistent collection and accumulating multiplier behaviour — not a watered-down variant. Organic triggers and Bonus Buy share the same math model and the same 15,000× cap. Distribution runs through Hacksaw Gaming's OpenRGS platform, which is worth noting for E-E-A-T: Bullshark develops the mechanics; Hacksaw handles regulated distribution. Neither path changes the 96.27% RTP — they only change how quickly you reach the feature.
What happens during the bonus round
Step one: the grid shifts to the bonus backdrop and a spin counter appears. You receive the awarded number of spins at no extra stake deduction beyond whatever triggered entry — paid spin or Bonus Buy purchase. Step two: the Collection Counter no longer zeroes out when a spin ends. It keeps running across the feature and only resets after a Grid Booster fires, which is the single biggest rule change from base game. Step three: each cascade still feeds the counter toward the 30, 40 and 50 symbol tiers. At Tier 1 you choose Remove Low or Add Wilds. At Tier 2 you get Add Global Multiplier plus a second choice. At Tier 3 all three boosters activate in sequence. Step four: the Global Multiplier starts at 1× and accumulates across spins with possible additions of 1–10×, 15×, 20×, 25×, 50× or 100× — it does not reset between spins inside the feature. Step five: because the counter resets only after boosters, you can cross 30, 40 or 50 again on later spins, stacking booster effects on an already elevated multiplier. Step six: when the final spin resolves, total bonus winnings credit to your balance and base-game rules resume — counter and multiplier both reset on the next paid spin.
Escalation and repeated boosters
Crabby Collector does not escalate through scatter retriggers the way a traditional free-spins slot might. Escalation here is structural: each time the Collection Counter re-crosses a threshold, another Grid Booster modifies the grid or bumps the Global Multiplier while the accumulated multiplier from earlier spins still applies. I have seen demo sessions where spin four crossed 40 twice in one feature — first Add Wilds, then a multiplier bump — and spin six hit 52 for a full Tier 3 triple activation. That layering is the escalation loop: counter climbs → booster fires → counter resets → collection continues on a richer grid with a higher multiplier floor. The longer the feature runs with active cascades, the more times that cycle can repeat.
Flow at a glance: Flow summary: land scatter symbols to enter the Collection Bonus Round; the Collection Counter carries across spins and only resets after a Grid Booster fires; crossing 30, 40 or 50 symbols unlocks boosters that can repeat; the Global Multiplier accumulates across the entire feature until it ends.
- Scatter triggers bonus
- Collection persists across spins
- 30 / 40 / 50 → Grid Booster
- Global Multiplier stacks
Bonus round math and RTP contribution
At 96.27% total RTP, Crabby Collector splits returns between base-game cascades and bonus-round accumulation. Bullshark has not published a precise percentage attribution in the materials I have reviewed, but the design makes the split intuitive: base game delivers frequent small clusters and occasional single-spin booster hits, while the bonus concentrates upside where the Global Multiplier compounds and boosters can fire multiple times. That is why bonus entry changes session variance even though the 15,000× max win is technically reachable in base game too — the probability mass shifts toward longer chains with stacked multipliers. Bonus Buy at 100× stake is priced into the same math model; it is a variance shortcut, not a separate RTP tier. For hit-frequency bands, volatility context and operator-specific RTP notes, see the dedicated breakdown.
Bonus Buy availability
Where enabled, Bonus Buy costs 100× your current total stake and drops you straight into the Collection Bonus Round — the same persistent counter and accumulating multiplier behaviour as an organic trigger. Confirm the price in the in-game buy menu before purchasing; some operators list premium variants with different starting conditions.
