Power of Ninja is a 2021 release from Swintt, the Malta-based studio that has built a growing catalogue around Eastern European market preferences and feature-forward designs. The Japanese ninja theme — shuriken, temple settings, disciplined warrior imagery — is handled with the kind of clean stylisation that suits a 5×4 reel layout well, and the expanded four-row grid gives the game more real estate for the expanding wild mechanic that sits at the centre of its feature design. Twenty paylines spread across the larger grid creates a well-populated win structure.

Bets run from $0.10 to $100. High volatility is the defining characteristic of the math model, consistent with a game that concentrates its prize potential into the Free Spins round’s expanding wild events rather than distributing value across the base game. Shuriken scatter symbols trigger the Free Spins, and it is during the bonus that the ninja wild’s expanding behaviour becomes most consequential. In regular play, ninja wilds substitute for standard symbols on completing combinations; in the feature they expand to cover full reels, turning isolated appearances into reel-wide substitutes that power large multi-line wins.

The full-reel ninja wild is the mechanical highlight of Power of Ninja. On a 5×4 grid, a wild-covered reel interacts with every payline crossing it — all 20 in most configurations — and when the adjacent reels carry high-value symbols the result is a significant combined payout. The Bonus Buy feature allows direct entry into the Free Spins round, bypassing the scatter trigger for players who want immediate access to the expanding wild bonus rather than waiting for the base game to deliver it. Maximum win is 5,000x the bet.

RTP is 96.00% and volatility is high.

Power of Ninja is a competent and visually considered Swintt release. The ninja theme earns its setting through consistent art direction, and the expanding wild free-spins format delivers the kind of full-reel wild events that high-volatility feature slots are built around.