Massive Studios

Grannies VS Aliens

Play Grannies VS Aliens slot by Massive Studios for free in demo mode! Explore RTP, bonus rounds, and key features before playing for real.

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

96.66%

return to player

Volatility

—

variance

Max win

20,000×

top multiplier

Min bet

$0.10

per spin

Reels

15 lines

Player rating

4.4 ★

9 votes

DEMO Play free, no signup

Massive Studios

Embed on your site

4.4 / 5

9 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 & RTP9/10

RTP 96.66% → 9.0/10

Volatility8/10imputed

imputed medium (unknown) → 8.0/10

Win Potential8.6/10

x20000.00 (20000×) → 8.6/10

Features6.5/10

8 features → 6.5/10

Game Mechanics5.3/10

f=8 r=5 p=15 → 5.3/10

Context signals (tie-breakers)

Layout6/10

5x3 → 6.0/10

Bet Flexibility6/10

0.1–100 (×1000) → 6.0/10

Provider Reputation8/10

provider avg 8.0 → 8.0/10

Popularity5/10

synthetic proxy → 5.0/10

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: 72 — Grannies VS Aliens by Massive Studios

https://slotranker.com/massive-studios/grannies-vs-aliens#score

How to cite

Spec sheet

Grannies VS Aliens at a glance.

Identity

Slot nameGrannies VS Aliens

StudioMassive Studios

Released

Math

SlotRanker Score72

RTP96.66%

Max win20,000×

Bet range$0.10 – $100.00

Player rating4.4 / 5 · 9 votes

Format

Reels5

Paylines15

Layout5x3

Features

Themes

Expected average based on this slot's 96.66% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$1.34

Cost per session$1.34

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 Grannies VS Aliens? 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 (96.66%), with wins capped at its top multiplier (20,000×).

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 Grannies VS Aliens

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Compare Grannies VS Aliens with other games

	Grannies VS Aliens Score 72This game	Sweet Saga Score 88	Rocket Reels Score 86	Crystal Robot Score 86	Big Bang Score 86
Identity
Studio	Massive Studios	Caleta Gaming	Hacksaw Gaming	Backseat Gaming	Belatra Games
Released	—	2/10/2025	9/15/2021	1/16/2025	1/23/2023
Math
RTP	96.66%	96.94%	96.3%	96.28%	96.11%
Volatility	—	High volatility	High volatility	High volatility	High volatility
Max win	20,000×	10,461×	10,000×	12,500×	5,000×
Format
Reels	5	6	7	6	8
Layout	5x3	6x6	7x7	6x4	8x8
Paylines	15	Cluster Pays	7	19	Cluster Pays
Min bet	0.1	0.1	0.2	0.1	0.2
Max bet	100	300	100	100	100
Features
Progressive	—	—	—	—	—
Wild symbol	✓	✓	✓	✓	✓
Free spins	✓	✓	✓	✓	✓
Scatter symbol	✓	✓	✓	✓	—
Multiplier	—	✓	✓	✓	✓
Bonus game	—	—	—	✓	—
Respins	—	—	—	—	—

Every number is shown as a delta against Grannies VS Aliens.

Comparing against

Grannies VS Aliens

Massive Studios

RTP

96.66%

Max win

20,000×

Score

+ Multiplier+ Bonus Game

+ Multiplier− Scatter

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