Free Demos · Expert Reviews · April 2026

UK Online Slot Reviews & Free Demos

4,633 slots reviewed — play for free before risking a penny. Filter by RTP, provider, volatility, genre and bonus features.

4,633slots

261providers

95.66%avg RTP

4,633free demos

126 slots

EndorphinaMedium

2027 iss

Sci-Fi, Casino

96.06%×750k

Gamble FeatureFree SpinsWilds+1

GenesisLow

8-bit Intruders

Sci-Fi

96.29%×1215k

Bonus GameWildsScatters

Green Jade GamesMedium

Alien K.O.

Sci-Fi

95.08%×25k

Free SpinsWildsScatters+1

NetEntMedium

Alien Robots

Sci-Fi

96.60%×50k

RespinsFree SpinsWilds+2

NetEntMedium

Aliens

Sci-Fi

96.40%×570k

Bonus GameFree SpinsWilds

Fils GameMedium

Asteroid Hunter

Sci-Fi

94.50%×16200k

Bonus GameFree SpinsWilds+2

MaverickMedium

Astro Gems

Sci-Fi

95.00%×1000k

Free SpinsWildsScatters

Caleta GamingMedium

Astro Wild

Sci-Fi

96.63%×400k

RespinsBonus GameFree Spins+3

MaverickMedium

Battlemech Earth

Sci-Fi

95.34%×2000k

Free SpinsWildsScatters+1

MaverickMedium

Battlemech Mars

Sci-Fi

95.18%×5000k

RespinsFree SpinsWilds+3

NetEntHigh

Big Bang

Sci-Fi

96.00%×134k

Wilds

QuickspinMedium

BigBot Crew

Sci-Fi

96.51%×500k

RespinsFree SpinsWilds+2

WazdanMedium

Burning Stars

Sci-Fi

96.50%×2500k

Gamble FeatureScatters

Yggdrasil GamingHigh

Cazino Cosmos

Sci-Fi

96.00%×236k

RespinsFree SpinsWilds+2

Gaming1Medium

CometStar

Sci-Fi

96.01%×100k

Free SpinsWildsScatters+1

Iron Dog StudioLow

Cosmic Crystals

Sci-Fi

95.01%×35k

RespinsWildsExpanding Symbols+1

NetEntLow

Cosmic Fortune

Sci-Fi

96.90%×735k

RespinsBonus GameFree Spins+3

2By2 GamingLow

Cosmic Invaders

Adventure, Sci-Fi

95.10%×113k

Bonus GameFree SpinsWilds+2

ThunderkickLow

Cosmic Voyager

Sci-Fi

96.14%×500k

Free SpinsWildsScatters+2

Slot FactoryMedium

Cosmic Wilds

Sci-Fi

95.00%×93k

Free SpinsWildsScatters

Gaming1Low

Cosmo Pix

Fruity, Sci-Fi

96.36%×1k

RespinsGamble FeatureWilds

MascotMedium

Crash, Hamster, Crash

Animals, Misc, Sci-Fi

95.00%×25k

Caleta GamingMedium

Crazy Lab

Sci-Fi

92.56%×75k

Bonus GameFree SpinsWilds+2

FunTa GamingMedium

Crazy Lab

Sci-Fi

94.50%×500k

RespinsBonus GameScatters+1

Mancala GamingMedium

Cybercity

Sci-Fi

95.00%×5749k

Bonus GameFree SpinsWilds+1

WoohooHigh

Cyberpunk Wars

Sci-Fi

96.00%×8000k

Free SpinsWildsScatters+3

Yggdrasil GamingLow

Cyrus the Virus

Sci-Fi

96.30%×80k

RespinsWildsExpanding Symbols

Ruby PlayMedium

Dr. Frankenstein

Movies & TV, Sci-Fi

96.39%×160k

Free SpinsWildsScatters+2

MascotMedium

Dreamshock: Jackpot X

Neon, Sci-Fi

95.19%×250k

Gamble FeatureFree SpinsWilds+2

NetEntLow

Elements

Sci-Fi

96.02%×150k

RespinsFree SpinsWilds+1

Play'n GOMedium

Energoonz

Sci-Fi

96.73%×50k

Free SpinsScatters

BetsoftMedium

Expansion!

3D, Sci-Fi

96.08%×364k

Free SpinsWildsScatters+2

Mancala GamingNo data

Fallout Zone

Sci-Fi

95.00%×4500k

Bonus GameWildsScatters

EyeconHigh

Fluffy in Space

Animals, Sci-Fi

96.36%×100k

Free SpinsWildsScatters+1

Leander GamesMedium

Force of Nature

Sci-Fi

95.90%×200k

Bonus GameFree SpinsWilds+1

PromaticMedium

Freezing Fruits

Sci-Fi

96.02%×1000k

Gamble FeatureBonus GameFree Spins+3

AmusnetMedium

Frog Story

Comics, 3D, Sci-Fi

95.87%×1200k

RespinsWildsStacked Symbols

EndorphinaMedium

Fruletta

Fruity, Sci-Fi

96.03%×9k

Free SpinsWildsScatters+2

PlaytechMedium

Full Moon Fortunes

Sci-Fi

94.02%×1250k

RespinsJackpot

EyeconHigh

Galactic Girls

Sci-Fi

96.62%×200k

WildsScattersStacked Symbols

Relax GamingHigh

Galactic Racers

Sci-Fi

94.00%×1000k

Bonus GameFree SpinsWilds+3

MGA GamesMedium

Galactica

Sports, Sci-Fi

95.00%×15k

Free SpinsWildsScatters+2

SmartSoftMedium

Galaxy Clot

Sci-Fi

95.00%×10000k

RespinsGamble FeatureBonus Game+3

GenesisHigh

Galaxy Stars

Sci-Fi

96.00%×50k

Gamble FeatureFree SpinsScatters+1

Ruby PlayMedium

Gallantry

Sci-Fi

96.29%×1000k

Free SpinsWildsScatters

Manna PlayLow

Gasha Shine

Sci-Fi

97.77%×48k

RespinsWildsExpanding Symbols+1

SwinttMedium

Golden Reindeer

Adventure, Sci-Fi

95.01%×3000k

Gamble FeatureFree SpinsWilds+1

iSoftBetMedium

Greta Goes Wild

Sci-Fi

96.00%×80k

Free SpinsWildsScatters

Nucleus GamingMedium

Hyper Galactic

Fruity, Sci-Fi

95.00%×125k

WildsStacked Symbols

Relax GamingMedium

Line Busters

Sci-Fi

94.00%×3000k

Free SpinsScattersStacked Symbols+1

WMGMedium

Lucky Aliens

Sci-Fi

90.00%×20k

Bonus GameWildsScatters+1

Apollo GamesMedium

Mad Mechanic Deluxe

Sci-Fi

94.60%×720k

Free SpinsWildsScatters+2

BetsoftMedium

Mad Scientist

Sci-Fi

95.00%×125k

Bonus GameWildsScatters+1

BetsoftMedium

Madder Scientist

3D, Sci-Fi

95.18%×2250k

RespinsBonus GameFree Spins+3

WazdanMedium

Magic Spins

Gems & Jewels, Sci-Fi

96.17%×25000k

RespinsBonus GameFree Spins+3

WazdanMedium

Magic Stars 3

Sci-Fi

96.50%×400k

Gamble FeatureWilds

WazdanMedium

Magic Stars 5

Sci-Fi

96.42%×25k

Gamble FeatureScatters

WazdanMedium

Magic Stars 6

Sci-Fi

96.49%×5k

Gamble FeatureFree SpinsWilds+1

WazdanMedium

Magic Stars 9

Sci-Fi

96.21%×11k

Gamble FeatureFree SpinsWilds+1

MrSlottyMedium

Mars Dinner

Sci-Fi

94.50%×80k

Gamble FeatureFree SpinsWilds+2

BelatraMedium

Marswood Party

Sci-Fi

95.00%×1000k

Gamble FeatureWildsScatters+1

Inbet GamesMedium

Martians Attack

Sci-Fi

95.00%×13500k

Gamble FeatureFree SpinsWilds+1

Mancala GamingMedium

Mechano Lab

Sci-Fi

95.00%×230k

Bonus GameFree SpinsWilds+2

SpearheadMedium

Meganova

Sci-Fi

96.41%×167k

RespinsWildsExpanding Symbols+1

Nolimit CityMedium

Milky Ways

Sci-Fi

96.38%×566k

RespinsFree SpinsWilds+1

True LabMedium

Mining Factory

Sci-Fi

96.40%×1815k

Free SpinsWildsScatters+1

StakelogicLow

Monkeys of the Universe

Sci-Fi

97.16%×2505k

RespinsBonus GameScatters+1

MobilotsMedium

Monster Clone

Sci-Fi

95.00%×60k

Stacked Symbols

Tom HornMedium

Monster Madness

Sci-Fi

96.00%×50k

Gamble FeatureFree SpinsWilds+2

Pragmatic PlayHigh

Monster Superlanche

Sci-Fi

96.03%×50000k

RespinsFree SpinsScatters+1

FugasoHigh

Mr. Toxicus

Sci-Fi

96.02%×125k

Gamble FeatureBonus GameFree Spins+2

ThunderspinHigh

Necronomicon

Sci-Fi

95.30%×100k

Free SpinsWildsScatters+1

OnetouchMedium

Neon 2077

Neon, Sci-Fi

96.29%×360k

Stacked Symbols

Eurasian GamingMedium

Peach Banquet

Sci-Fi

94.30%×1810k

Free SpinsScattersStacked Symbols

FugasoMedium

Plagues Of Egypt

Sci-Fi

95.70%×200k

RespinsFree SpinsWilds+2

NetEntMedium

Planet of the Apes

Gems & Jewels, 3D, Sci-Fi

96.33%×600k

Free SpinsWildsScatters

Pragmatic PlayHigh

Power of Thor Megaways

Sci-Fi

96.97%×40000k

RespinsWildsStacked Symbols

MascotMedium

Re Kill Ultimate

Sci-Fi

95.40%×225k

RespinsBonus GameWilds+1

Play'n GOHigh

Reactoonz

Sci-Fi

96.00%×91k

RespinsWilds

Ruby PlayMedium

Reel All-Stars

Sci-Fi

96.47%×100k

Gamble FeatureFree SpinsWilds+2

Red Tiger GamingHigh

Reptizillions Power Reels

Sci-Fi

95.00%×80k

Free SpinsWildsScatters

BetsoftMedium

Return to Paris

Sci-Fi

96.06%×106k

RespinsFree SpinsWilds

Superlotto GamesMedium

Robo Chef

Sci-Fi

95.00%×813k

Free SpinsWildsScatters+1

Red Tiger GamingMedium

Rocket Men

Animals, Sci-Fi

96.12%×62k

Free SpinsScatters

MicrogamingMedium

Shoot!

Neon, Sci-Fi

96.54%×62k

RespinsGamble FeatureWilds+1

Red Tiger GamingHigh

Snow Wild And The 7 Features

Sci-Fi

96.03%×80k

Free SpinsWildsScatters

PlaysonHigh

Solar Temple

Sci-Fi

95.22%×100k

RespinsWildsExpanding Symbols+1

NetEntMedium

South Park

Sci-Fi

95.00%×1250k

RespinsFree SpinsWilds+1

FugasoMedium

Space Battle

Sci-Fi, Christmas

95.99%×100k

Bonus GameFree SpinsWilds+2

1x2 GamingMedium

Space Christmas

Neon, Sci-Fi

96.00%×75k

Free SpinsWildsScatters+1

WazdanHigh

Space Gem

Sci-Fi

96.40%×100k

Bonus GameFree SpinsWilds+2

PlayPearlsMedium

Space Hunters

Sci-Fi, Crime

97.05%×150k

Bonus GameFree SpinsWilds+2

ThunderspinHigh

Space Jail

Sci-Fi

95.50%×100k

Free SpinsWildsScatters+1

SpinmaticMedium

Space Oddity

Sci-Fi, Gems & Jewels

97.12%×42k

Gamble FeatureFree SpinsWilds+1

WazdanMedium

Space Spins

Sci-Fi

96.66%×25k

Bonus GameStacked Symbols

NetEntMedium

Space Wars

Sci-Fi

96.75%×200k

RespinsFree SpinsWilds+1

BGamingHigh

Space XY

History, Sci-Fi

97.00%×1000k

RespinsFree SpinsWilds+1

FaziMedium

Spin Cards

Neon, Sci-Fi

95.00%×2000k

Free SpinsWildsScatters+2

BetsoftHigh

Stampede

Movies & TV, Sci-Fi

95.27%×77k

Free SpinsWildsScatters

Big Time GamingHigh

Star Clusters

3D, Sci-Fi

96.54%×479k

Free SpinsWildsScatters

EveriMedium

Star Magic

Sci-Fi

95.00%×1600k

RespinsWildsStacked Symbols

Big Time GamingHigh

Star Quest

Sci-Fi

96.22%×100k

Bonus GameFree SpinsWilds+2

MicrogamingMedium

StarDust

3D, Sci-Fi

96.59%×100k

RespinsFree SpinsWilds+2

Triple CherryHigh

Starfall mission

Sci-Fi

95.22%×65k

RespinsGamble FeatureWilds+2

FaziMedium

Starlight

Sci-Fi

95.00%×2500k

WildsStacked Symbols

Red Tiger GamingMedium

Stars Luck

Sci-Fi

96.16%×80k

RespinsBonus GameWilds+1

True LabMedium

StartUp Valley

Sci-Fi

96.48%×3780k

Free SpinsWildsStacked Symbols

SlotvisionHigh

Steampunk Queen

Sci-Fi

95.00%×8k

RespinsWildsScatters+2

ThunderkickLow

Sunset Delight

Sci-Fi

96.30%×41k

WildsExpanding SymbolsStacked Symbols

FugasoMedium

Super Hamster

3D, Sci-Fi

96.00%×260k

Free SpinsWilds

BetsoftMedium

Super Sweets

Sci-Fi

95.03%×1250k

Free SpinsWildsExpanding Symbols

GenesisMedium

Super Wilds

Sci-Fi

95.12%×10000k

Free SpinsWilds

Pg SoftMedium

Supermarket Spree

Gems & Jewels, Sci-Fi

96.71%×2500k

Bonus GameFree SpinsWilds+2

Evoplay EntertainmentLow

Temple of Dead

Sci-Fi

95.99%×750k

Free SpinsWildsScatters+1

Green Jade GamesMedium

The Christmas Slot

Sci-Fi

95.02%×50k

Bonus GameWildsScatters+1

ThunderkickMedium

The Rift

Neon, Sci-Fi

96.30%×82k

Gamble Feature

EndorphinaMedium

The Rise of AI

Sci-Fi

96.00%×5k

Free SpinsWildsScatters+1

1x2 GamingMedium

Theseus Rises

Sci-Fi

96.00%×375k

Free SpinsWildsScatters+1

Pragmatic PlayHigh

Tic Tac Take

Sci-Fi

96.63%×17600k

Free SpinsWildsScatters

AvatarUXMedium

TikiPop

Movies & TV, Sci-Fi

96.10%×640k

RespinsBonus GameWilds+3

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