Spinberry

1 Drop

Slots Video Slots Fantasy Nature Sun Rainbow Sky Thunderstorm

Weather slot linking a background matrix to Wild drops

SlotRanker Score

/ 99

05099

The SlotRanker Score is calculated from the visible data below. It is not affected by affiliate deals, and it cannot be bought.

How this score is built

RTP

94.23%

return to player

Volatility

—

variance

Max win

—

top multiplier

Min bet

$0.10

per spin

Reels

1024 lines

Player rating

4.5 ★

19 votes

DEMO Play free, no signup

Spinberry

Embed on your site

4.5 / 5

19 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 & RTP6/10

RTP 94.23% → 6.0/10

Volatility8/10imputed

imputed medium (unknown) → 8.0/10

Win Potential—

no data

Features6.5/10

10 features → 6.5/10

Game Mechanics6.2/10

f=10 r=5 p=1024 → 6.2/10

Context signals (tie-breakers)

Layout5/10

5x4 → 5.0/10

Bet Flexibility8/10

0.1–250 (×2500) → 8.0/10

Provider Reputation5.3/10

provider avg 5.3 → 5.3/10

Popularity3.3/10

synthetic proxy → 3.3/10

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: 59 — 1 Drop by Spinberry

https://slotranker.com/spinberry/1-drop#score

How to cite

Slot Summary

An Umbrella landing on the middle reel releases stored raindrops into the active grid, giving 1 Drop its clearest gameplay rhythm. Spinberry separates preparation from payoff through a background matrix: silver drops become persistent Wilds, while golden drops lead toward Free Spins. The 94.23% RTP and 1,024-way format are conventional reference points; the distinctive idea is watching inactive weather symbols gather before one trigger transfers them into play.

How It Plays

Silver and golden raindrops accumulate behind the main grid before they become active. The Umbrella on the middle reel releases every stored drop into its corresponding position.

Silver drops become persistent Wilds after release, while golden drops act as Free Spins symbols. This makes the Umbrella the bridge between preparation and immediate reel effects.

Theme & Atmosphere

Nature and Sky imagery are treated as an operating weather system, with Sun, Rainbow, and Thunderstorm elements tied to the movement of drops behind the reels.

The Fantasy angle comes from weather waiting in a separate layer before entering play. Rain is not merely atmosphere; it signals stored Wild and Free Spins potential.

Fantasy Nature Sun Rainbow Sky Thunderstorm

Features & Win Potential

Mystery symbols may appear anywhere and transform together into one regular symbol. They then remain fixed for another spin, with a new Mystery symbol extending the sequence.

The Risk/Gamble game follows eligible wins with a card choice, while Random Wilds and Substitution Symbols provide additional ways to alter ordinary symbol outcomes.

Free Spins Scatter Symbol Wild Symbol 5 Reels Bonus Buy Free Spins Multiplier Risk/Gamble (Double) game Random Wilds / Additional Wilds Mystery symbol Substitution Symbols

Bonus & Free Spins

Three, four, or five golden raindrops award 10, 15, or 20 Free Spins. These symbols must first be released when an Umbrella lands on the middle reel.

During Free Spins, every winning spin raises the multiplier by x1. The value persists between spins, so later wins can receive a larger multiplier than early ones.

Spec sheet

1 Drop at a glance.

Identity

Slot name1 Drop

StudioSpinberry

Released2/15/2024

Math

SlotRanker Score59

RTP94.23%

Max win—

Bet range$0.10 – $250.00

Player rating4.5 / 5 · 19 votes

Format

Reels5

Paylines1024

Layout5x4

Features

Themes

Expected average based on this slot's 94.23% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$2.31

Cost per session$2.31

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 1 Drop? 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 (94.23%), with wins capped at its top multiplier (1,000×).

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.

Where to play 1 Drop

No matching casinos for your region yet

Casino availability depends on where you play from. We only show casinos that accept players from your country.

Compare 1 Drop with other games

	1 Drop Score 59This game	Todays Weather Score 72	Land of Gold Score 59	Dragonz 2 Score 86	Rise of the Mountain King Score 85
Identity
Studio	Spinberry	Genesis	KA Gaming	Hammertime	NextGen
Released	2/15/2024	7/1/2014	10/10/2018	11/11/2024	3/7/2020
Math
RTP	94.23%	96.13%	95.99%	96.3%	96.31%
Volatility	—	Medium volatility	Medium volatility	High volatility	High volatility
Max win	—	—	7,500×	15,000×	50,000×
Format
Reels	5	5	5	5	5
Layout	5x4	5x3	5x3	5x3	5x3
Paylines	1024	25	25	243	30
Min bet	0.1	0.01	0.25	0.2	0.3
Max bet	250	50	500	5	15
Features
Progressive	—	—	—	—	—
Wild symbol	✓	✓	✓	✓	✓
Free spins	✓	✓	✓	✓	✓
Scatter symbol	✓	✓	✓	✓	✓
Multiplier	—	✓	—	✓	✓
Bonus game	—	✓	—	✓	—
Respins	—	—	—	—	✓

Every number is shown as a delta against 1 Drop.

Comparing against

1 Drop

Spinberry

RTP

94.23%

Max win

—

Score

+ Multiplier+ Bonus Game

+ Multiplier+ Bonus Game

Rise of the Mountain King

+ Multiplier+ Respins

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