Grid and Bet Range
The game starts on a 5×4 reel setup with 1,024 ways to win. Bets run from €0.10 to €200 per spin – a broad range that covers cautious players and high rollers alike. The real twist: unlock all five tiers and the grid expands to 6×4, pushing paylines to 4,096.
Collection Meter and Tier Progression
This is where this slot separates itself. On any spin, symbols appear with Key tokens. Collect 80 tokens and unlock the next tier – but only if at least one Scatter symbol is on the grid. The progression is unique to each bet level and does not reset once unlocked.
There are five tiers in total:
| Tier | Wild Type | Effect |
|---|---|---|
| 1 | Regular Wild | Wilds drop down on their reel when a win occurs |
| 2 | Multiplier Wild | Carry x2, x3, x5, or x10 multipliers – values multiply together if more than one is in a win |
| 3 | Expanding Wild | Cover an entire reel, increasing win ways in the hit |
| 4 | Unbreakable Wild | Stick to the grid after a win, remain until cascades end |
| 5 | 6th Reel Unlock | Grid expands to 6×4 with 4,096 paylines |
The climb takes roughly 250 spins to complete during testing, so this is not an overnight unlock. But the structure makes the base game feel more connected – each tier adds real weight to future spins.
Cascading Wins and Scatter Blast
Cascading mechanics fire on every win. When exactly 2 Scatters remain on the grid after all cascades finish, the Scatter Blast feature triggers – the Scatters explode in a 3×3 area, clearing all symbols except Wilds and firing an additional cascade. Sharp tool when momentum builds.
Free Spins and Bonus Buy
Land 3 or more Scatters to trigger Free Spins. You start with 10 spins, plus each additional Scatter adds +1 to the total. Retriggers work the same way – 3 Scatters award 10 more, each single Scatter grants +1 spin. One key rule: only unlocked Wilds are active during the bonus, and the Collection Meter does not persist. So the free spins round uses whatever tier upgrades you have already earned and builds the action around them.
Players can buy into Free Spins directly. The purchase awards between 10 and 13 free spins and immediately unlocks all five tiers, skipping the progression grind entirely. Cost is fixed at 70x the bet.
Math and Volatility
this slot is a medium-volatility release with a hit frequency of 25.06% – roughly one win every 4 spins. The RTP stands at 96.23% (highest setting available), with alternative tiers possible depending on operator configuration. Maximum win is capped at 5000x the stake.
Theme and Presentation
The jungle expedition framing fits the tier unlock system well enough. Peter & Sons has delivered a polished, functional slot here – but compared to some of their more visually distinctive releases, the design feels a touch more conventional. The game looks good; it just does not carry quite as much personality or weirdness as their strongest titles.
