Gameplay & Feel

This is a 5-reel, 100-line slot with fixed lines, so every spin covers the full setup. The rules are straightforward: wins pay left to right, and scatter symbols pay anywhere and get added on top of ways wins. It’s an easy grid to read even when it’s full of stacked animals.

The game includes a wild symbol that substitutes for all symbols except scatters, and it can expand to cover the whole reel when doing so creates a win. That single trick gives the slot its biggest “pop” moments, especially when multiple reels expand at once.

There are no bonus games, no Hold & Win, no mystery features, no sticky wilds, and no tumble mechanics — Butterfly Bonus keeps things classic and clean, with just enough extra flair through its expanding wild.

Mechanically, it’s a mid-volatility title with a 20.64% hit rate and a max win of x100, so expect regular small hits and the occasional stronger boost when the expanded wild kicks in.

Free Spins?

There are no in-game free spins, but API Free Spins are supported, meaning operators can award them during promotions.

Bets & Settings

Total bet range: 20 – 2000
RTP: 96.41%
Autoplay: Yes
No turbo mode, no side bets, no buy bonus, no progress bar
Jackpot & multiplier features are available

Everything is kept simple and neat — just set your bet, hit Start, and watch the forest come alive.

Overall Vibe

Butterfly Bonus is a colourful, easy-flowing slot built for players who like traditional gameplay with a touch of magical atmosphere. The 100-line layout and expanding wild give the reels plenty of movement without introducing complicated mechanics. It’s calm, smooth, and ideal for long, relaxing sessions.