Rival Gaming

Grandma's Attic

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Play Grandma's Attic slot by Rival Gaming for free in demo mode! Explore RTP, bonus rounds, and key features before playing for real.

Only 0.4% of slots combine Free Spins Multiplier and Low Volatility.

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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

94.2%

return to player

Volatility

Low volatility

variance

Max win

—

top multiplier

Min bet

$0.15

per spin

Reels

15 lines

Player rating

4.4 ★

15 votes

DEMO Play free, no signup

Rival Gaming

4.4 / 5

15 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 94.2% → 6.0/10

Volatility6/10

low → 6.0/10

Win Potential—

no data

Features6.5/10

7 features → 6.5/10

Game Mechanics5.3/10

f=7 r=5 p=15 → 5.3/10

Context signals (tie-breakers)

Layout6/10

5x3 → 6.0/10

Bet Flexibility6/10

0.15–18.75 (×125) → 6.0/10

Provider Reputation6.4/10

provider avg 6.4 → 6.4/10

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: 50 — Grandma's Attic by Rival Gaming

https://slotranker.com/rival-gaming/grandmas-attic#score

How to cite

Spec sheet

Grandma's Attic at a glance.

Identity

Slot nameGrandma's Attic

StudioRival Gaming

Released7/1/2024

Math

SlotRanker Score50

RTP94.2%

VolatilityLow volatility

Max win—

Bet range$0.15 – $18.75

Player rating4.4 / 5 · 15 votes

Format

Reels5

Paylines15

Layout5x3

Features

Themes

Expected average based on this slot's 94.2% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$3.48

Cost per session$3.48

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 Grandma's Attic? 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: Low

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 (Low). The model is calibrated so the average return equals this slot's published RTP (94.20%), 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.

Compare Grandma's Attic with other games

	Grandma's Attic Score 50This game	Broadsiders Score 86	Madame Mystique Megaways Score 86	Gold Pigger 2 Royal Snouts Score 82	Devil Fire 2 Score 82
Identity
Studio	Rival Gaming	Massive Studios	Pragmatic Play	Fantasma Games	Tada Gaming
Released	7/1/2024	1/27/2025	5/25/2023	12/9/2024	4/19/2024
Math
RTP	94.2%	96.62%	98.03%	96.09%	97.16%
Volatility	Low volatility	—	High volatility	Medium volatility	High volatility
Max win	—	30,000×	5,000×	13,712×	14,000×
Format
Reels	5	7	6	5	5
Layout	5x3	7x7	6x7	5x3	5x3
Paylines	15	Cluster Pays	200704	4096	40
Min bet	0.15	0.10	0.20	0.20	0.10
Max bet	18.75	100.00	100.00	10.00	100.00
Features
Progressive	—	—	—	—	—
Wild symbol	✓	✓	✓	✓	✓
Free spins	✓	✓	✓	✓	✓
Scatter symbol	✓	✓	✓	✓	✓
Multiplier	—	✓	✓	✓	—
Bonus game	✓	—	—	✓	—
Respins	—	—	—	✓	—

Every number is shown as a delta against Grandma's Attic.

Comparing against

Grandma's Attic

Rival Gaming

RTP

94.2%

Max win

—

Score

+ Multiplier− Bonus Game

Madame Mystique Megaways

+ Multiplier− Bonus Game

Gold Pigger 2 Royal Snouts

+ Multiplier+ Respins

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