Butterfly Staxx 2 by NetEnt is a 5-reel, 4-row video slot built around a Re-Spins mechanic in which stacked Butterfly symbols consolidate across the grid and progressively unlock additional play areas within a single spin sequence. The game runs on 40 fixed paylines with an RTP of 96.33% and medium volatility — a combination that generates moderate wins at reasonable frequency alongside larger payouts during extended Re-Spins sequences.
The slot features a Wild symbol (Glowing Lotus), a Scatter (Pink Rose) that triggers a choice between two bonus modes, and a Re-Spins system that can expand into up to three simultaneous play areas. At a R1 total bet, the base game plays cleanly, but the Re-Spins sequences can evolve significantly as Butterfly symbols fill reel after reel.
Symbols and Paytable
The symbol set is divided across two confirmed regular tiers plus a special-function category. The medium-value group is led by the Yellow Butterfly, which also acts as the game's core mechanical symbol — its dual role as both a paying icon and the trigger for Re-Spins makes it the most structurally significant symbol in the slot. Alongside the Butterfly, three flower types round out the mid-tier: Red Lotus, Purple Flower, and Blue Daisy. The low-value tier consists of card symbols A, K, Q, and J.
Exact coin payouts at the standard R1 bet configuration (50 coins, coin value R0.02) are as follows:
| Symbol | 2 matches | 3 matches | 4 matches | 5 matches |
|---|---|---|---|---|
| Yellow Butterfly | 2 | 10 | 25 | 50 |
| Red Lotus | — | 10 | 20 | 40 |
| Purple Flower | — | 10 | 20 | 40 |
| Blue Daisy | — | 10 | 20 | 40 |
| A | — | 5 | 10 | 20 |
| K | — | 5 | 10 | 20 |
| Q | — | 5 | 10 | 20 |
| J | — | 5 | 10 | 20 |
The Yellow Butterfly is the only symbol with a 2-match payout (2 coins). At coin value R0.02, a five-of-a-kind Yellow Butterfly line win equals R1.00 in coins; the actual total win depends on how many of the 40 paylines carry the same match simultaneously — which during Re-Spins can be all of them.
The Wild symbol — the glowing orange-red Lotus flower — appears anywhere on the reels in the main game and Re-Spins and substitutes for all symbols except the Scatter. The Scatter (Pink Rose) has no line win value but triggers the bonus selection when three appear on reels 1, 3, and 5 at the same time.
Betting and Game Controls
The game uses a coin-based bet structure. The R1 total bet (as shown in gameplay: 50 coins at coin value R0.02, Level 2) is a practical reference point for calculating potential wins. The Autoplay button runs a preset number of spins automatically; Max Bet applies the highest available combination of bet level and coin value in a single click.
All paylines pay left to right, starting from the leftmost reel. Only the highest win per payline is paid — if a payline qualifies for multiple symbol combinations, the game awards the largest one. Wins across multiple different paylines are summed to form the round total.
Game Features
Re-Spins and Multiple Play Areas
The Re-Spins system is the mechanical foundation of Butterfly Staxx 2. It activates whenever a full stack of Butterfly symbols lands and covers an entire reel from top to bottom. Once triggered, all Butterfly symbols fly to the leftmost available position on the same row — any row not already occupied by a Butterfly — and lock there for the remainder of the Re-Spins sequence.
Each Re-Spin that brings new Butterfly symbols continues the sequence. Coverage of the grid determines whether additional play areas unlock:
- Two leftmost reels fully covered → second play area unlocked.
- Three leftmost reels of the first play area OR two leftmost reels of the second play area fully covered → third play area unlocked.
Every additional play area begins with its leftmost reel already filled with Butterfly symbols and operates its own full 40-payline layout independently. With three areas active, the single R1 bet generates results across three separate grids at once.
Scatter Symbol and Bonus Selection
Three Scatter symbols (Pink Rose) landing simultaneously on reels 1, 3, and 5 in the main game triggers a bonus choice screen. The player selects between Butterfly Spins and Butterfly Frenzy — two mechanically distinct modes that operate differently and deliver payouts through separate logic.
Butterfly Spins
During Butterfly Spins, only Cocoon symbols land on the reels — no standard symbols appear at all. Each Cocoon is either dormant or active. Active Cocoons that land visibly on the reels transform into Butterfly symbols, which then migrate left to the first available row position in the same way as Re-Spins. All resulting line wins are added to the cumulative total, and Butterfly symbols remain locked in place until the end of the mode.
Three play areas are active from the very first spin of Butterfly Spins, unlike the main game where they must be progressively unlocked through reel coverage. This starting condition maximises potential grid coverage from the outset, making Butterfly Spins the higher-variance of the two bonus options.
Butterfly Frenzy
Butterfly Frenzy is a pick-style bonus in which the player selects Butterfly symbols to reveal coin prizes that accumulate into a total win. The round is structured around stages: as picks progress, the stage advances and the coin value ranges increase. A "Stage Upgrade" pick moves the round to the next tier.
The coin win ranges by stage are structured as follows:
| Stage | Coin Win Range |
|---|---|
| Stage 1 | 10–40 coins |
| Stage 2 | 25–50 coins |
| Stage 3 | 40–75 coins |
| Stage 4 | 50–100 coins |
| Stage 5 | 75–125 coins |
At coin value R0.02, a Stage 5 pick yields between R1.50 and R2.50 per selection. Butterfly Frenzy delivers more controlled, predictable payouts compared to the open-ended potential of Butterfly Spins.
Payout Mechanics & Math Profile
Butterfly Staxx 2 runs on a 5×4 grid with 40 fixed left-to-right paylines, but the actual distribution of wins is shaped almost entirely by the Re-Spins consolidation mechanic rather than by individual line hits. Understanding how the grid geometry interacts with the payline structure explains why this slot plays the way it does.
The key geometric fact: each reel covers 4 of the 20 total symbol positions. When a full reel locks with Butterfly symbols, it means every one of the 40 paylines that includes that reel column now carries a matching symbol in that position. At two full reels — the threshold for unlocking the second play area — all 40 paylines simultaneously have at least a 2-symbol Butterfly match. At three full reels, every payline has a guaranteed 3-of-a-kind or better with the top medium-tier symbol. The left-to-right payline architecture means that Butterfly coverage maps directly and efficiently onto payline coverage, which is the geometric engine driving the slot's largest wins.
The two bonus modes contribute differently to the overall RTP of 96.33%. Butterfly Spins starts at full three-area expansion and runs with only Cocoon-to-Butterfly conversion mechanics — every active Cocoon adds to coverage from an already-dense starting state, compounding win opportunities across three grids. Butterfly Frenzy is stage-gated and deterministic within each stage range, contributing a more bounded portion of the return without the open-ended compound effect.
The Re-Spins sequence in the base game is where the variance is most visible. A single-reel hit produces a modest Re-Spin with limited coverage; a sequence that reaches the second or third play area threshold produces a significantly different result as the number of simultaneously winning paylines scales with each reel locked.
| Metric | Structural Value | Mathematical Impact |
|---|---|---|
| Grid size | 5 × 4 (20 positions) | One full reel stack = 4 locked positions = 20% of total grid coverage |
| Payline saturation at 2 reels filled | 40/40 paylines include a Butterfly symbol | All paylines carry a guaranteed 2+ symbol match simultaneously |
| Butterfly Spins start state | 3 play areas active from spin 1 | 3× grid expansion vs. single-area main game — maximum initial coverage density |
| Re-Spin Expansion Threshold (custom) | 8 Butterfly positions → Area 2; 12 in Area 1 or 8 in Area 2 → Area 3 | Each threshold adds an independent 40-payline grid, compounding the total win base multiplicatively |
The Butterfly Staxx 2 demo is widely available at NetEnt-supported online casinos and provides full access to all mechanics — including Re-Spins, play area expansion, and both bonus modes — making it a practical way to observe how the grid fills before committing to real-money play.