Ava Studios

Sphere City

Play Sphere City slot by Ava Studios for free in demo mode! Explore RTP, bonus rounds, and key features before playing for real.

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SlotRanker Score

/ 99

05099

The SlotRanker Score is calculated from the visible data below. It is not affected by affiliate deals or paid placement.

How this score is built

RTP

95.38%

return to player

Volatility

—

variance

Max win

10,000×

top multiplier

Min bet

$0.10

per spin

Reels

16 lines

Player rating

5.0 ★

13 votes

DEMO Play free, no signup

Ava Studios

5.0 / 5

13 ratings

User ratings are shown separately from the Slot Score unless stated otherwise.

Five weighted signals shape the composite. Four context signals refine ties. See how we rate for the full methodology.

Payouts & RTP8/10

RTP 95.38% → 8.0/10

Volatility8/10imputed

imputed medium (unknown) → 8.0/10

Win Potential8/10

x10000.00 (10000×) → 8.0/10

Features5.5/10

6 features → 5.5/10

Game Mechanics5.3/10

f=6 r=5 p=16 → 5.3/10

Context signals (tie-breakers)

Layout6/10

5x3 → 6.0/10

Bet Flexibility8/10

0.1–1000 (×10000) → 8.0/10

Provider Reputation6.6/10

provider avg 6.6 → 6.6/10

Popularity0/10

synthetic proxy → 0.0/10

Popularity blends real player search demand (~30 markets) with a catalogue-derived proxy; games without measurable search demand use the proxy alone. Not live play telemetry.

Cite this score

SlotRanker Score: 60 — Sphere City by Ava Studios

https://slotranker.com/ava-studios/sphere-city#score

How to cite

Spec sheet

Sphere City at a glance.

Identity

Slot nameSphere City

StudioAva Studios

Released3/26/2026

Math

SlotRanker Score60

RTP95.38%

Max win10,000×

Bet range$0.10 – $1000.00

Player rating5.0 / 5 · 13 votes

Format

Reels5

Paylines16

Layout5x3

Features

Themes

Expected average based on this slot's 95.38% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$1.85

Cost per session$1.85

Estimate only, for entertainment purposes — treat gambling as entertainment, not a way to make money, and set a budget you can afford to lose.

How long could a bankroll last on Sphere City? We simulate thousands of sessions from this game's published RTP and volatility — the long-run math, not a prediction of your next spin.

Bankroll ($)Bet per spin ($)Speed

Volatility tier: Mediumassumed — not published for this slot

Running simulation…

How this works

Each simulated spin either misses or returns a win drawn from a log-normal distribution, with the hit rate and spread set by the slot's volatility tier (Medium). The model is calibrated so the average return equals this slot's published RTP (95.38%), with wins capped at its top multiplier (10,000×).

This is a simplified, parametric model of the game's math — not its real paytable. It exists to make the house edge visible over many sessions, so the numbers above are averages across thousands of runs, never a forecast of one.

This is math, not a prediction. Real sessions vary wildly, and no strategy changes a game's built-in house edge. Play for fun, set limits, and never bet more than you can afford to lose.

Compare Sphere City with other games

	Sphere City Score 60This game	Steampunk Reloaded Score 89	Master of Lightning Score 88	Sweet Saga Score 87	Crystal Robot Score 86
Identity
Studio	Ava Studios	Naga Games	Popiplay	Caleta Gaming	Backseat Gaming
Released	3/26/2026	12/2/2022	11/15/2022	2/10/2025	1/16/2025
Math
RTP	95.38%	97.58%	98.08%	96.94%	96.28%
Volatility	—	Medium/High	High volatility	High volatility	High volatility
Max win	10,000×	—	10,200×	10,461×	12,500×
Format
Reels	5	5	5	6	6
Layout	5x3	5x3	5x4	6x6	6x4
Paylines	16	40	Pay Anywhere	Cluster Pays	19
Min bet	0.10	0.00	0.20	0.10	0.10
Max bet	1000.00	0.00	25.00	300.00	100.00
Features
Progressive	—	—	—	—	—
Wild symbol	✓	—	✓	✓	✓
Free spins	✓	✓	✓	✓	✓
Scatter symbol	✓	✓	✓	✓	✓
Multiplier	✓	✓	✓	✓	✓
Bonus game	—	✓	—	—	✓
Respins	—	—	—	—	—

Every number is shown as a delta against Sphere City.

Comparing against

Sphere City

Ava Studios

RTP

95.38%

Max win

10,000×

Score

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