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Both-Ways Slots by RTP: Atlantis Edges Top o’ the Money
Secrets of Atlantis and Top o’ the Money are both-ways slots, meaning each payline pays left-to-right and right-to-left on the same spin. Secrets of Atlantis runs a 97.07% RTP against Top o’ the Money’s 96.05%, a gap of more than a full point despite carrying double the paylines of its rival.
Which Both-Ways Slot Has the Higher RTP?
Secrets of Atlantis has the higher RTP of the two at 97.07%, compared with 96.05% for Top o’ the Money. Both titles share an identical 5-4 reel grid and the same both-ways payout logic, which makes the RTP gap a direct read on how each provider allocated the house edge rather than a side effect of reel layout.
| Criterion | Secrets of Atlantis | Top o’ the Money |
|---|---|---|
| Provider | NetEnt | Greentube |
| RTP | 97.07% | 96.05% |
| Volatility | Medium | Medium-Low |
| Reels | 5-4 | 5-4 |
| Paylines | 40 (both ways) | 20 (both ways) |
| Max win | x3200 bet | 100,000 units |
| Release | 24 Aug 2016 | 15 May 2017 |
The table shows a slot released nearly a year earlier, Secrets of Atlantis, still holding the RTP lead over a newer Greentube release.
Secrets of Atlantis in Detail: NetEnt’s 40-Way Slot
Secrets of Atlantis is a NetEnt slot released on 24 August 2016, built on a 5-4 grid with 40 both-ways paylines and medium volatility. Its betting range runs from 0.4 to 100.0 per spin, and the maximum win is capped at 3200 times the bet.
NetEnt’s combination of medium volatility and a 97.07% RTP positions Secrets of Atlantis as a steadier long-session pick rather than a jackpot-chasing one. The 40-line both-ways structure doubles the number of winning combinations checked per spin relative to a standard 20-line layout, which raises hit frequency without by itself raising the theoretical return — that return is set independently by NetEnt’s pay table design.
Top o’ the Money in Detail: Greentube’s 20-Way Slot
Top o’ the Money is a Greentube slot released on 15 May 2017, also on a 5-4 grid but with 20 both-ways paylines and medium-low volatility. Its advertised maximum win is 100,000 units, and the lower volatility rating suggests a flatter, more frequent payout curve than Secrets of Atlantis, even though its overall RTP sits a full point below NetEnt’s title.
Greentube’s medium-low volatility classification means Top o’ the Money is built to pay out more often in smaller amounts rather than chase big multipliers, which can suit players who prioritize session length over swing size. The 100,000-unit max win figure is a flat cap rather than a bet multiplier, so it is not directly comparable in scale to Secrets of Atlantis’s x3200 figure without knowing the stake size behind it.
Why More Paylines Didn’t Mean Better RTP
Paylines affect how often a spin lands a win, not the overall percentage a slot returns over time — RTP is a separate design choice made by the provider’s pay table. Secrets of Atlantis proves this directly: its 40 both-ways lines mean more combinations are checked on every spin than on Top o’ the Money’s 20 lines, which should push hit frequency up, yet NetEnt still shipped the higher RTP alongside the higher line count.
Top o’ the Money’s 20-line structure, paired with medium-low volatility, was evidently built around smaller, more frequent wins rather than a high theoretical return — the 96.05% RTP reflects that design choice, not a penalty for running fewer lines. The practical takeaway for players comparing both-ways slots is to check RTP and volatility together, since a higher payline count on its own tells you nothing about the long-term edge.
Where to Play Both Slots
NetEnt titles including Secrets of Atlantis are live at 123 casinos, among them iWild Casino and Gamblezen. Greentube’s distribution is narrower: Top o’ the Money is live at 8 casinos, including Hypekasino.
NetEnt’s footprint runs roughly fifteen times wider than Greentube’s across the casinos tracked here, so finding a venue carrying Secrets of Atlantis is a far easier search than locating one that carries Top o’ the Money.
Verdict on Both-Ways Slots by RTP
Secrets of Atlantis is the stronger both-ways pick on paper: a 97.07% RTP, a medium volatility profile, and distribution across 123 casinos give it both the better long-term edge and the easier access. Top o’ the Money remains a reasonable choice for players who prefer medium-low volatility and more frequent, smaller hits, but its 96.05% RTP and narrower 8-casino footprint put it behind on both of the measures that matter for long-session play. Players comparing further options can browse the full games catalogue for other both-ways and Megaways mechanics before settling on a session.
