Jungle Spirit: Call of the Wild places expansion at the centre of both its base game and bonus. A butterfly-marked symbol expands across its reel only when it belongs to a winning combination, while Butterfly Boost can select symbols in a guaranteed win and expand them. Free Spins enlarge the layout from three to four rows and ask the player to choose among five animal modes, each with a different number of spins and stated risk profile. The mechanics connect reel shape, winning status and bonus choice rather than relying on one generic Wild feature.
Jungle Spirit: Call of the Wild at a glance
| Provider | NetEnt |
|---|---|
| Genre / theme | Animals |
| Game type | Video slot |
| Reels / grid | 5 reels × 3 rows; 4 rows in Free Spins |
| Reference RTP | 96.47% |
| Volatility | 9.1 (catalog scale) |
| Payout mechanic | 243 ways base; 1,024 ways in Free Spins |
| Maximum win | 7,700× bet |
| Release date | 18 March 2017 |
| Main features | Winning butterfly-marked symbols expand; Butterfly Boost selects guaranteed winning symbols, and three to five Scatters unlock an animal-selected Free Spins mode. |
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.
How marked symbols and Butterfly Boost differ
The catalog lists five reels and a base 5×3 layout with 243 ways; Free Spins use four rows and 1,024 bet ways. Any symbol except a Scatter can be marked by butterflies. If the marked symbol belongs to a winning combination, it expands to cover the entire reel, in both the main game and Free Spins. The win condition is essential: being marked alone does not establish that the symbol expands.
Butterfly Boost has its own trigger and guarantee. It can activate randomly during a main-game win, but only when no Scatter or butterfly-marked symbols are present. Two or three butterflies then select symbols that belong to a guaranteed winning combination, and those symbols expand across their reels. Unlike ordinary Symbol Expansion, Boost explicitly selects winning symbols and guarantees their participation. The available rules do not say that the two expansion paths stack, so they should be described as separate mechanics with different conditions.
Five modes reshape the Free Spins grid
Three to five Scatters anywhere in the main game trigger Free Spins. The reels expand to four rows, increasing the listed ways to 1,024. Four Scatters award an instant 15× bet prize and five award 50×. At the feature start, the player chooses one of five animals; that symbol becomes the only medium-paying symbol on the reels. Tiger gives four spins and is described as highest volatility and greatest potential; Elephant gives eight and remains high risk; Bear offers twelve as a middle ground; Crocodile gives sixteen and leans steadier; Cobra gives twenty and is described as lowest volatility and lower risk.
These are explicitly framed as risk-and-reward options, but the source provides no probabilities or expected values for each selection. The player chooses the animal and therefore the mode’s number of spins and medium symbol; this is not a random feature selection. The longer options are described as less volatile and steadier, while the shorter Tiger mode is higher risk. Those labels explain the intended contrast, not a promise about any individual result.
Configuration and uncertainty
The saved exact-game record lists RTP 96.47%, volatility 9.1 and a maximum payout of 7,700× bet. The maximum win probability is not supplied. These figures do not quantify Butterfly Boost activation, Scatter distributions or the chance of a particular Free Spins animal producing a result. The record supports comparing rule structures, not forecasting outcomes.
Strengths and weak points
Strengths
The game distinguishes conditional symbol expansion from Butterfly Boost’s guaranteed winning selection, then offers five Free Spins modes with explicit counts and different stated risk profiles.
Weaknesses
Mode risk is described qualitatively, without probabilities or expected values. The 7,700× cap and RTP do not indicate how often a chosen animal route reaches a large result.
Our Editor’s View
Call of the Wild makes expansion conditional in two different ways: ordinary marks need to belong to a win, while Butterfly Boost selects symbols already in a guaranteed combination and expands those reels. Free Spins then alter the grid itself and let the player choose between five animal modes with known spin counts and stated risk differences. This gives the bonus a clear decision point and ties its exclusive medium symbol to the chosen animal. The limitation is that the risk descriptions are qualitative, with no event odds or mode-specific return data in the saved source. Players who value transparent choices and changing grid dimensions may enjoy comparing the five routes; those who prefer a consistent bonus length or quantified odds may find the selection difficult to evaluate beyond its stated labels.
