Twisted Lab RotoGrid

Twisted Lab RotoGrid is Hacksaw Gaming's take on the mad-scientist slot trope, pairing a neon-drenched, punk-styled laboratory setting with the kind of quirky character work the studio has become known for. Players are introduced to a chaotic pair of lab inhabitants overseeing an experiment that seems to have gone gleefully wrong, and the whole presentation leans into dark humour rather than horror.

Visually, the game commits to its eccentric premise. The reels sit inside a rotating gaming panel, and pay symbols reflect the lab setting directly: a feather, leaves, an egg, a mushroom, a length of tentacle, an eyeball, teeth, and a brain, each paying between 0.5x and 5x the stake for a five-of-a-kind combination. A beaker symbol acts as the wild, substituting for regular pays and worth 10x the bet on its own for five matching positions. It is a genuinely different set of symbols from what most slots offer, and the presentation carries a real sense of personality throughout.

Gameplay runs across 19 fixed paylines, tracked across the rotating panel so that winning combinations remain readable even as the grid spins. RTP is confirmed at 96.3%, a solid figure that sits above the market average, giving players a fair shake over the long run. Volatility is rated high at 4 out of 5, meaning wins can be spread out but tend to hit harder when they land, and the reported hit frequency of 35% suggests the base game keeps things ticking over reasonably often between the bigger moments.

Stakes run from 10p up to £/€100 a spin, giving plenty of room to scale bets to your bankroll, and five separate bonus buy options are available for players who want to skip straight to the feature round rather than grinding it out organically. The spreading wild multipliers and hold-and-win style respin mechanic that Hacksaw is known for should form the backbone of the bonus potential here, building toward a maximum win of 15,000x the stake, a genuinely chunky ceiling that rewards patient high-volatility players.

Twisted Lab RotoGrid is a good pick for anyone who enjoys Hacksaw's off-beat visual style and wants a high-volatility slot with a real shot at a big multiplier hit. The rotating grid and unusual symbol set give it a distinct identity from the usual crop of five-reel releases. Give the free demo a spin at johnessyslots to see the rotating panel and beaker wilds in action before deciding whether to commit real stakes.