192 lines usually means a stepped six-reel grid that grows from two rows to seven, the WMS Reel Boost design. Six of these games compared on return, layout and features.
Why the Reels Step From Two to Seven
Almost every 192 payline slot shares one unusual shape: six reels that get taller from left to right, with two symbols on the first reel, then three, four, five, six and seven on the last. WMS built the layout into its Reel Boost games, Zeus III, Knight’s Keep and Red Flag Fleet among them, and KA Gaming later used the same stepped grid for its own titles.
That shape could support thousands of win routes, but these games pick 192 fixed lines through it. Wins run from the left, so the two-symbol first reel is the gate every win has to pass through. Five of the six games below are also 6 reel slots; the sixth is a five-reel outlier.
Zeus III and the Other Stepped-Reel Games
Ordered by top return. Most of these games have clashing top-win figures across listings, so a dash marks every max win nobody agrees on.
| Game | Studio | Rows per reel | RTP | Max win | Volatility |
|---|---|---|---|---|---|
| Zeus III | WMS (Light & Wonder) | 2-3-4-5-6-7 | 96.10% | – | Medium-high |
| Red Flag Fleet | WMS (Light & Wonder) | 2-3-4-5-6-7 | 96.04% | – | Medium-high |
| Knight’s Keep | WMS (Light & Wonder) | 2-3-4-5-6-7 | 96.01% | – | – |
| The Great Voyages | KA Gaming | 2-3-4-5-6-7 | 96.00% | – | High |
| Luck O’ The Jackpot | Entain in-house | 2-2-3-4-4 | 95.00% | – | Medium |
| Alexander the Great | KA Gaming | 2-3-4-5-6-7 | 94% or 96% | – | – |
Top wins swing wildly between sources: Zeus III is quoted anywhere from 800x to 19,200x, and Knight’s Keep’s volatility is listed as medium, medium-high and high.
Zeus III
The most familiar game of the group and the highest return at 96.10%. Zeus III plays with wild reels, nudging wilds and stacked wilds in the base game, and its free spins can carry a multiplier. Bets start at 40p a spin.
Red Flag Fleet
WMS’s pirate game on the same stepped grid, at 96.04%. Three or more ship symbols start the free spins, and on every free spin two or three reels turn wild, which is where its bigger wins come from. More sea-going games are on our pirate slots page.
Knight’s Keep
The third game in WMS’s Black Knight series, at 96.01%. Three, four or five scatters award 5, 12 or 25 free spins, and during them three or four reels change into the same pay symbol on each spin, the first reel always included. It sits with our knights and medieval slots too.
The Great Voyages
KA Gaming’s voyage-of-discovery game returns 96% with high volatility and adds expanding symbols to the wilds and free spins. Casinos may run other versions, so the in-game figure is the one to check.
Luck O’ The Jackpot
The odd one out. This Irish-themed game from the Entain group’s own studios uses five reels of 2, 2, 3, 4 and 4 rows and pays both ways, and multiplying those rows together gives exactly 192. It is linked to a five-level jackpot and has a pick-and-click bonus that hands out free spins and multipliers. Most listings give 95%, though one market shows 93.12%. Our Irish slots page has more in the same vein.
Alexander the Great
KA Gaming’s game about the Macedonian conqueror, on the stepped grid with up to 50 free spins. One catalogue lists 94% and casino listings show 96%, so this is a game where the version really matters. It is a different game from Red Tiger’s Alexander the Great: World Conqueror.
Lines or Ways: Two Routes to 192
The same number arrives two ways. On the WMS and KA Gaming grids, 192 is a chosen set of fixed lines; a fully open 2-3-4-5-6-7 grid would have room for 5,040 combinations. On Luck O’ The Jackpot, 192 is simply every possible route across its 2-2-3-4-4 reels, the same idea as 243 ways slots on a different shape.
For you, the label says little about the payout. The return and the volatility come from each game’s maths, and across these six they run from 94% to 96.10% and from medium to high.
When the Reels Flip in Free Spins
Zeus III made the flipped-reel layout popular, and Knight’s Keep flips its reels during free spins, turning the stepped grid the other way round. Because every win starts on the left, a flip changes which reels matter most, so the bonus rounds play quite differently from the base game.
Bonus buys are not part of these games in Britain. GB versions carry none, so every free-spins round has to land from scatters.
What a Session Costs on These Grids
The 40p minimum makes these games cheap to sample. Six hundred spins at 40p on Zeus III, about an hour of play, cost around £9 on average at its 96.10% return. At the £5 limit for players aged 25 and over, the same hour averages about £117, and at the £2 limit for players aged 18 to 24 about £47.
Alexander the Great shows the gap between versions: at £5 a spin, an hour averages about £120 on a 96% version and £180 on a 94% one. Any single session can land well away from those averages, and a free demo at your own casino runs the same version as its paid game.
