Supernova

Supernova is a five-reel, 10-payline online slot from Tada Gaming that builds its entire identity around a single mechanic: guaranteed wild expansion paired with a stacking multiplier system.

Theme and Gameplay

Supernova keeps its feature set tight and focused rather than piling on distractions. The core mechanic is an Expanding Wild and Respin feature — whenever a wild lands, it guarantees a full expansion and kicks off a respin, giving players a genuine chance at a full-board win rather than a single isolated symbol. Layered on top of that is a Wild Multiplier system tied to an optional Extra Bet: activating it applies a 2x multiplier when one reel lands a wild, 4x for two reels, and 8x when three reels are covered.

What the RTP Means for Players

Supernova carries a return to player of 97%, a genuinely strong figure that sits well above the typical online slot average, suggesting a fair long-run payout structure for players who stick with the game over a large number of spins.

Volatility

The game is rated low to medium volatility, putting it somewhere between a steady drip of smaller wins and the bigger swings associated with higher-variance titles — a reasonably approachable setting for players who don't want to sit through long dry spells waiting for the wild-expansion mechanic to fire.

Max Win and Betting Range

The maximum win on offer is 4,000 times the stake, a sensible ceiling for a low/medium-volatility game built around a respin-driven core mechanic rather than a single explosive bonus round. Stakes range from 20p/c up to $/€100 per spin, with the option to activate the Extra Bet feature for a shot at those stacking wild multipliers.

Why the Extra Bet Matters

Because the multiplier scale runs from 2x for a single wild reel up to 8x for three, the Extra Bet effectively rewards players for accepting a slightly higher stake in exchange for meaningfully bigger potential returns whenever the respin feature lands multiple wilds in the same round, giving Supernova a bit more strategic texture than its compact 10-payline layout might initially suggest.

Verdict

Supernova is a leaner, more mechanically focused slot than most, betting everything on its expanding wild and respin loop rather than a sprawling features list — and with a 97% RTP backing it up, that simplicity pays off nicely for players who enjoy watching a single mechanic do the work. Worth trying via the free demo at johnessyslots to see how the Extra Bet multipliers stack up before playing for real money.