Butterfly Staxx turns a symbol stack into a persistent position on the reels. When a full reel of butterflies appears, they move left along their rows and stay in place during Re-Spins; newly visible butterflies can extend the sequence. A separate Scatter-triggered Butterfly Spins feature uses Cocoon symbols that may hatch into butterflies. Both features revolve around leftward movement, but they begin differently and cannot run together, making that separation central to understanding the game.
Butterfly Staxx at a glance
| Provider | NetEnt |
|---|---|
| Genre / theme | Animals |
| Game type | Video slot |
| Reels / grid | 5 reels × 4 rows |
| Reference RTP | 96.8% |
| Volatility | 3.5 (catalog scale) |
| Payout mechanic | Up to 40 lines |
| Maximum win | 300× bet |
| Release date | 21 June 2017 |
| Main features | Full-reel Butterfly stacks trigger hold-and-move Re-Spins; three or more Scatters trigger Cocoon-based Butterfly Spins without retriggers. |
RTP and stake limits can vary by version and market. Check the information screen in the game you open. Maximum win is a ceiling, not an expected result.
A five-reel line game with two butterfly routes
The official record lists five reels, four rows and up to 40 lines. Wild symbols can appear in the main game and Re-Spins, substituting for all symbols except Scatters and paying the highest possible line combination. The main special symbol is the Butterfly. A stack covering an entire reel activates Re-Spins, and any line wins from the triggering round are paid before the feature starts. All butterflies then move to the leftmost unoccupied position on the same row and remain there.
Each additional visible Butterfly landing during a Re-Spin makes the same leftward move, stays on the reels and awards another Re-Spin. A butterfly hidden behind another Butterfly does not count as visible for this rule. When no new visible Butterfly lands, Re-Spins end and their line wins are paid and added to the initial round’s wins. This creates a spatial stopping condition: the chain continues only when another qualifying symbol appears, while occupied positions constrain where later butterflies can settle. Butterfly Spins and ordinary Re-Spins cannot activate simultaneously, so the game does not combine both persistence systems in one feature sequence.
Cocoons change the bonus pattern
Three or more Scatters anywhere in the main game trigger Butterfly Spins. Here only Cocoon symbols land. A Cocoon may be dormant or active; an active one becomes a Butterfly when visible. All butterflies then move to the leftmost same-row position not already occupied, and remain until the feature ends. Line wins are added to the total. Unlike Re-Spins, additional Butterfly Spins cannot be won during the round, and the bet and coin value stay at the level of the trigger spin.
That makes the two modes related in appearance but distinct in pacing. Re-Spins can be extended by more visible butterflies; Butterfly Spins instead depend on whether Cocoon symbols become active and yield butterflies, with no retrigger route. In both cases a butterfly’s row matters because movement is horizontal and stops at the leftmost available place. After Butterfly Spins end, the feature total is added to the triggering round and play returns to that round. The saved rules do not say how many spins Butterfly Spins initially award, so this review does not assign a count.
Configuration and the limits of the record
NetEnt’s exact-title record lists RTP 96.8%, volatility 3.5 and a maximum payout of 300× bet. The catalog classifies the game as lines and lists up to 40 lines. These figures do not give the probability of a full Butterfly stack, an active Cocoon or a long Re-Spin sequence; no maximum-win probability is recorded. The mechanical contrast is clear, while the frequency of either route remains unquantified.
Strengths and weak points
Strengths
The two features share a readable leftward movement rule, while their different triggers and extension limits give Re-Spins and Cocoon-based Butterfly Spins distinct roles.
Weaknesses
Butterfly Spins have no stated initial count in the saved evidence and cannot retrigger. The catalog maximum gives no estimate of how often visible stacks or active Cocoons appear.
Our Editor’s View
Butterfly Staxx gives its symbol persistence a coherent visual and mechanical purpose. A full-reel stack starts Re-Spins, and each new visible Butterfly can move left, occupy a row position and extend the chain. Snow Party’s cluster respins provide another animal-themed respin comparison, whereas Butterfly Staxx moves qualifying symbols leftward within their rows instead of treating the board as a cluster reset. The Scatter feature reuses that movement after active Cocoons hatch, but removes the possibility of retriggering. That gives the game two related modes without making their rules interchangeable. The main trade-off is that the bonus’s duration is not fully described in the saved packet, and neither the catalog ceiling nor volatility explains how often the board will fill with butterflies. Players who enjoy watching symbols accumulate in constrained spaces may like the gradual leftward pattern; those who want a bonus with a stated spin count and repeated extensions may find the documented Butterfly Spins less transparent.
