


Sphere City is an online slot from AVA STUDIO with an RTP of 95.38%.
Page updated July 2026
Sphere City is a slot from AVA STUDIO, a developer name that points toward a smaller, boutique-style studio rather than one of the larger mainstream suppliers. Going by the title, expect a futuristic or geometric city theme, though the detailed grid layout and feature mechanics haven't been confirmed yet.
Without published information on reels, paylines or bonus triggers, the best way to see exactly how Sphere City plays is to check the in-game paytable once the game becomes available. The name suggests a sleek, orb-and-skyline visual concept, but the specific mechanics behind it remain unconfirmed at this stage.
Sphere City carries an RTP of 95.4%, a figure that sits just under the roughly 96% mark many players treat as an average benchmark for online slots. It's not a dramatic shortfall, but it's worth knowing the return profile leans slightly below the middle of the pack.
Volatility hasn't been disclosed for Sphere City, so checking the in-game paytable or information screen once the game is live is the best way to gauge whether it favours frequent smaller wins or rarer, bigger prizes.
Maximum win potential and the stake range haven't been confirmed for Sphere City either. As with the volatility rating, the in-game paytable will carry the definitive numbers once the game is accessible directly.
As with any release from a smaller studio, the safest approach with Sphere City is to treat the published RTP as the one concrete data point available right now, and to build expectations around that rather than the theme alone. A sub-96% RTP isn't unusual across the wider slot market, and plenty of games at that level still deliver genuinely entertaining feature sets, so it's worth judging Sphere City on the full picture once the mechanics are confirmed rather than the return figure in isolation.
Sphere City is one to approach with a bit of caution given its sub-96% RTP, though the finer mechanical details could still make it worth a look once fully confirmed. Futuristic, geometric themes have carved out their own niche in the slot market, so AVA STUDIO's take is worth checking out. Load up the free demo at johnessyslots when available to see exactly how Sphere City plays before wagering real money.
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Sphere City has an RTP (return to player) of 95.38%. RTP is the theoretical percentage of total stakes a slot returns to players over a very large number of spins, as published by AVA STUDIO — individual sessions can land far above or below it.
Sphere City is developed by AVA STUDIO.
Verified Data via Johnessy AI