Gates of Olympus and Sweet Bonanza are Pragmatic Play's mechanical twins in everything but theme. Both use the same 6x5 pay-anywhere grid. Both rely on cascading tumble wins. Both feature random multiplier symbols (2x-500x) that drop during free spins and combine when multiple multipliers participate in the same cascade. The maths engine is functionally identical.
Both run Pragmatic's three-tier deployment system. At the same casino and tier, Gates wins by 0.02pp — irrelevant over any realistic session. Over 10,000 spins at £1 stake, that is a £2 difference in expected return. The choice between them is theme (Greek gods vs candy) and multiplier presentation (Zeus orbs vs candy bombs).
The critical caveat is that operators configure each title independently. One could be deployed at Tier 1 while the other sits at Tier 2 at the same casino. This is documented behaviour at multiple UK operators. If your casino deploys Gates at Tier 1 and Sweet Bonanza at Tier 2 (or vice versa), the 1pp tier gap dwarfs the 0.02pp theoretical gap entirely. Always check the in-game information screen on both titles before choosing. Our guide on how casinos change RTP covers the operator mechanics behind this.
If both deploy at the same tier, pure theme preference. If different tiers, play whichever is higher. The Sweet Bonanza max win (21,175x) is dramatically higher than Gates (5,000x), so for max-win chasers Sweet Bonanza has a meaningful edge despite the marginally lower RTP.