SZ
SZ
SZ
SzGames

Loading The Story of Sin...

This may take a few seconds

The Story of Sin

4 / 5
12,354 plays
adventure Mobile Friendly

Game Information

Developer: SZ Games
Rating:
4/5
Released: April 2024
Last Updated: June 2025
Technology: HTML5 (Unity WebGL)
Platform: Browser
Size: ~15 MB
Plays: 12,354
Mobile Support: Yes

Tags

adventure (194) mouse (1038) keyboard (1038) Mobile (519) hard (297) 2D (0) indie (1038) free (1038) html5 (1020)

About The Story of Sin

Unleash your inner rebel in The Story of Sin, a gripping free-to-play browser adventure that thrusts you into a world where Hell’s own rules can be broken! Set in the enigmatic Demo Paranormal universe, this indie adventure game delivers a unique blend of engaging storytelling and high-stakes gameplay. You are the spawn of Satan and The Devil – a force of pure chaos who refuses to bend to their hellish authority. After 25 years of insubordination, your infernal parents cast you into a magical coma. When you finally break free from their bonds, you embark on an extraordinary quest to carve out your own destiny—one that pits you against sinister forces both infernal and mortal.

Crafted in stylized HTML5 for seamless browser play, The Story of Sin boasts intricate pixel art and atmospheric soundscapes that immerse you in a shadowy realm where every choice bears consequences. Navigate a series of cryptic puzzles, moral crossroads, and deadly challenges as you escape Hell’s grasp—and decide whether redemption or chaos awaits. Designed for players who crave a hard challenge, this game rewards risk-takers and lateral thinkers. Each intense scenario pushes your tactical and narrative skills to the limit: Will you outsmart the Devil’s minions, ally with unlikely mortals, or harness forbidden powers?

Fully compatible with mobile devices, The Story of Sin lets you dive into its labyrinthine mysteries anywhere, anytime. Its branching paths and multiple endings ensure each decision truly matters, while rich dialogue and charismatic characters keep you invested until the final revelation. With a loyal following on itch.io and regular updates based on player feedback, The Story of Sin is a must-play for indie fans, lovers of dark fantasy, and anyone eager for a truly fresh online adventure.

Start your journey today—defy the legions of Hell and take control of your fate in one of the most compelling underground adventures of the year!

How to Play

Begin your escape from Hell by launching The Story of Sin directly in your browser or on your mobile device—no downloads required! Once in the game, use your keyboard for movement (arrow keys or WASD) and interact with objects and characters using the Enter or Space key. On mobile, intuitive touch controls replace the keyboard for seamless play.

Navigate each mysterious level by exploring your environment, searching for clues, and engaging in dialogue with a cast of supernatural beings. The game emphasizes choice-based mechanics: every decision influences how the story unfolds. Pay close attention during conversations—your responses may unlock secret pathways or trigger unexpected events. Puzzle-solving is key; examine suspicious objects, combine items, and use logic to progress. Some choices are timed, so stay alert and ready for quick thinking.

For beginners, take your time to thoroughly explore each area before advancing. Don’t be afraid to experiment with risky choices: sometimes chaos leads to surprising rewards! Use the in-game menu for hints, check your objectives frequently, and interact with everything—you never know what secrets are lurking. Remember, The Story of Sin is a hard adventure, so embrace failure as part of the journey, and don’t hesitate to restart from checkpoints to try new strategies. Trust your wits and intuition; every detail matters in outwitting Hell.

Controls

mouse
keyboard

Tips & Tricks

  • Talk to every character multiple times—hidden options and lore often appear after initial conversations.
  • Experiment with combining unusual items; some puzzles require out-of-the-box thinking.
  • Risk-taking can be rewarded—don’t shy away from chaotic choices if you feel stuck.
  • Pay close attention to environmental details, especially symbols or patterns.
  • Save your progress at key decisions so you can backtrack and discover alternate paths.
  • Keep an eye out for secret interactions by tapping or clicking on background elements.
  • Replay the game to discover all endings—each playthrough can reveal new story arcs.

Game Features

  • Branching narrative with multiple endings based on player choice.
  • Challenging, logic-based puzzles integrated into the story.
  • Stylish pixel art and immersive sound design for deep atmosphere.
  • Mobile- and browser-friendly HTML5 interface—play anywhere, anytime.
  • Rich dialogue with unique, unpredictable characters.
  • Indie-developed with fresh paranormal lore and regular content updates.
  • Community-driven feedback loop via itch.io ensures evolving gameplay.

Frequently Asked Questions

Is The Story of Sin really free to play?

Yes! The Story of Sin is 100% free to play online on any device, with optional support for the developer via itch.io.

How difficult is The Story of Sin for new players?

The game is intentionally challenging, with tough puzzles and branching choices. However, in-game hints and the ability to save progress make it accessible, even for adventure game newcomers.

Can I play The Story of Sin on my phone or tablet?

Absolutely! The game is fully mobile-compatible, with touch-friendly controls and optimized visuals for smooth browser play.

Do I need to play Demo Paranormal first to understand the story?

No prior experience is required—The Story of Sin stands on its own with an engaging narrative. Fans of Demo Paranormal will enjoy deeper lore connections, but new players can jump right in.

Are there multiple endings and replay value?

Yes! Your choices lead to different outcomes and endings. Replay to uncover hidden storylines, secret puzzles, and fresh character interactions.

Game Info

Rating 4/5
Plays 12,354
Category adventure
Difficulty hard
Mobile Yes
Haunted

Haunted

Grotesqueresque

Grotesqueresque

D-List Diva

D-List Diva

Coop Catacombs: Async Multiplayer Roguelike

Coop Catacombs: Async Multiplayer Roguelike

Dating Killmulator

Dating Killmulator

Lookouts

Lookouts

Exhibit of Sorrows

Exhibit of Sorrows

Learn Godot's GDScript From Zero

Learn Godot's GDScript From Zero

Cantata

Cantata

purrgatory

purrgatory

Honey Trap: Burned

Honey Trap: Burned

BLACK OPIUM prologue

BLACK OPIUM prologue

Confidential Killings

Confidential Killings

I Didn't Cheat

I Didn't Cheat

Melanie and the Magic Forest

Melanie and the Magic Forest

Island Of Mine (beta)

Island Of Mine (beta)

Arcane Earth - Increment Clicker

Arcane Earth - Increment Clicker

Silent Bonds

Silent Bonds

We Suspect Foul Play

We Suspect Foul Play

Open Saber

Open Saber

Fetch Quest (Game Jam Version)

Fetch Quest (Game Jam Version)

Seedship

Seedship

Noia Online [Alpha]

Noia Online [Alpha]

Zorlok

Zorlok

Fire and Dice

Fire and Dice

Social Democracy: An Alternate History

Social Democracy: An Alternate History

The King's Hound

The King's Hound

Ranfren:  Not Lucid Swap

Ranfren: Not Lucid Swap

Good Morgan Eve

Good Morgan Eve

Pre-Odyssey: Odysseus, Penelope & her Ducks [Otome; NaNoReno Version]

Pre-Odyssey: Odysseus, Penelope & her Ducks [Otome; NaNoReno Version]

Mind Games: Obsession

Mind Games: Obsession

Stygian Sun: Total Eclipse IF

Stygian Sun: Total Eclipse IF

Cargo

Cargo

The Adventures of Sherlock Holmes - An Affair of the Heart

The Adventures of Sherlock Holmes - An Affair of the Heart

Moonlight

Moonlight

Unraveled

Unraveled

Godly Heritage Quiz

Godly Heritage Quiz

M's Cases | Chapter 1

M's Cases | Chapter 1

Misplaced

Misplaced

Solitomb

Solitomb

Another Night at the Archive

Another Night at the Archive

Tales of Misteria

Tales of Misteria

IF - Mafiafell

IF - Mafiafell

"And I'll Never Leave"

"And I'll Never Leave"

Incredibox Sprunki Pyramixed

Incredibox Sprunki Pyramixed

Dream Diary

Dream Diary

FarAfter

FarAfter

Bru & Boegie: EPISODE 1 – Get da MILK!

Bru & Boegie: EPISODE 1 – Get da MILK!

RunieStory - Gameboy color / Analogue Pocket

RunieStory - Gameboy color / Analogue Pocket

Download RAM Idle

Download RAM Idle

The Lonesome shooter : A Father's Retribution

The Lonesome shooter : A Father's Retribution

Decline

Decline

The Marked

The Marked

Fall from Space (Game Boy)

Fall from Space (Game Boy)

Ciao Nonna

Ciao Nonna

Dragon Sweeper

Dragon Sweeper

Bedrot

Bedrot

i had another dream about you last night

i had another dream about you last night

Yume Tenshi 夢天使

Yume Tenshi 夢天使

nekoneko RPG

nekoneko RPG

HARVEST 2300

HARVEST 2300

Theropods - Demo

Theropods - Demo

Mad Science Interactive: Evil Embryology

Mad Science Interactive: Evil Embryology

Star Word: a Scrabble-like Adventure

Star Word: a Scrabble-like Adventure

Knight Night

Knight Night

BROCCOLI QUEST II: THE DARK SACRAMENT

BROCCOLI QUEST II: THE DARK SACRAMENT

Night Flyer - A Bat’s Journey

Night Flyer - A Bat’s Journey

SYNTAXIA

SYNTAXIA

O, Your Heavenly Stars!

O, Your Heavenly Stars!

Mezma's Revenge

Mezma's Revenge

Something is wrong with my World Map

Something is wrong with my World Map

Crash Course in You

Crash Course in You

stay with me

stay with me

soundStrider

soundStrider

Aria's Choice

Aria's Choice

Maia

Maia

On Wings Bringing Sleep

On Wings Bringing Sleep

Defiled Hearts: The Barbarian (alpha demo)

Defiled Hearts: The Barbarian (alpha demo)

ID Card [AI Remake]

ID Card [AI Remake]

Overnight

Overnight

Drown the Bride

Drown the Bride

Berrywitched!

Berrywitched!

Things Are Grim

Things Are Grim

Explore MakeGame

Explore MakeGame

Butterfly Soup 2 Web & Android Ports

Butterfly Soup 2 Web & Android Ports

Graveyard Oracle

Graveyard Oracle

80s Ford Game - Day 0 + Day 1 Demo

80s Ford Game - Day 0 + Day 1 Demo

Sailing with Stans (DEMO)

Sailing with Stans (DEMO)

Remnants Of The Past - Act 2

Remnants Of The Past - Act 2

Happiness Inc.

Happiness Inc.

GBVR - Virtual Trader

GBVR - Virtual Trader

Barback Blues: A Valhalla Story ~鬱陶しき日々~

Barback Blues: A Valhalla Story ~鬱陶しき日々~

Dante's Detour - Chapter I

Dante's Detour - Chapter I

(OPEN SOURCE) Tetris.html

(OPEN SOURCE) Tetris.html

Volatile Memory: Blood Trail

Volatile Memory: Blood Trail

Tourist Trap

Tourist Trap

Hauntsfield

Hauntsfield

Scale Salon

Scale Salon

Chantey - DEMO

Chantey - DEMO

A Taste of the Past

A Taste of the Past

Myosotis

Myosotis

Kity Builder (Prototype)

Kity Builder (Prototype)

Dungeon Raid

Dungeon Raid

Bubble Dreams 3D

Bubble Dreams 3D

Stake Through A Bloody Heart

Stake Through A Bloody Heart

Astro Gets A Snack at 2:34 AM | Playable Engine

Astro Gets A Snack at 2:34 AM | Playable Engine

And You'll Miss It

And You'll Miss It

4x4 Archipelago

4x4 Archipelago

Antlers

Antlers

Mister Jack - ScreamJam2024

Mister Jack - ScreamJam2024

Makin Biscuits

Makin Biscuits

Lowland Keepers

Lowland Keepers

Isletography

Isletography

Baldi's Gameboy All-Stars V3.0.5c

Baldi's Gameboy All-Stars V3.0.5c

BLOODSONG

BLOODSONG

Goblins Demise

Goblins Demise

Slay the Lizard of Lunenberg! (and other thankless sidequests)

Slay the Lizard of Lunenberg! (and other thankless sidequests)

Cow Life Sim RPG

Cow Life Sim RPG

The Giant's Visit 1.1

The Giant's Visit 1.1

Sebastian's Quest

Sebastian's Quest

Shadow Hunter (Amstrad)

Shadow Hunter (Amstrad)

Tutankham

Tutankham

Behind the Green Door

Behind the Green Door

shutdown.

shutdown.

Midnight Idle

Midnight Idle

TUNIC GBC

TUNIC GBC

Friend of the Void

Friend of the Void

Longest Night

Longest Night

The Snowperson [Demo, Winter VN Jam 2021]

The Snowperson [Demo, Winter VN Jam 2021]

Oni

Oni

Julia Was Alone (Chapter 4)

Julia Was Alone (Chapter 4)

The founders of [redacted]

The founders of [redacted]

Withering Hour

Withering Hour

iro

iro

The 14th Axe Wound

The 14th Axe Wound

Confluence: An Of Sense and Soul Soliloquy [EN/日本語]

Confluence: An Of Sense and Soul Soliloquy [EN/日本語]

Little Dungeon Renovator

Little Dungeon Renovator

zone: a history

zone: a history

Girls' Day Out

Girls' Day Out

A dark winter wander

A dark winter wander

Gorf the Ghost Saves Halloween

Gorf the Ghost Saves Halloween

The Advisor's Game

The Advisor's Game

Event Horizon

Event Horizon

Squeaks & Squalls

Squeaks & Squalls

After the Janazah

After the Janazah

Hamster Shelter

Hamster Shelter

Cubito McRadio & Dr.Isosceles - Prologue

Cubito McRadio & Dr.Isosceles - Prologue

Bunbons

Bunbons

Traced In Ink

Traced In Ink

Little Space Rangers

Little Space Rangers

Happy Dawn

Happy Dawn

Download RAM Idle 2

Download RAM Idle 2

Tech and Blood

Tech and Blood

Coria and the Sunken City

Coria and the Sunken City

Drifting Among Worlds

Drifting Among Worlds

Congee

Congee

CaliforniaClan

CaliforniaClan

GBJam10 - Potbound

GBJam10 - Potbound

A Fond Farewell

A Fond Farewell

Sofia the Witch Curse of the Monster Moon - Demo

Sofia the Witch Curse of the Monster Moon - Demo

The End of Decay

The End of Decay

The Daughters of the Sun

The Daughters of the Sun

Stevedore (MSX, 2020)

Stevedore (MSX, 2020)

Kudzu

Kudzu

Peter Stinger, Scorpion Ethicist, learns about himself and others

Peter Stinger, Scorpion Ethicist, learns about himself and others

BIRLA

BIRLA

sprunki unblocked free no virus! mini update 2!

sprunki unblocked free no virus! mini update 2!

PowerPutt Legend

PowerPutt Legend

Billy Went to a Carnival

Billy Went to a Carnival

Sub-Optimal

Sub-Optimal

Borbo's Quest

Borbo's Quest

Resident Evil:GB

Resident Evil:GB

Faceless Date

Faceless Date

TREES' ADVENTURE - Demo

TREES' ADVENTURE - Demo

Fatal Focus

Fatal Focus

Momotarou

Momotarou

Engineering Marvels From Hell

Engineering Marvels From Hell

Lil Flutie 3D - Director's Pandemic Edition

Lil Flutie 3D - Director's Pandemic Edition

Spooksville, USA - the sequel to HECK HOUSE

Spooksville, USA - the sequel to HECK HOUSE

Arcane Beak

Arcane Beak

Messages

Messages

The Time Has Come

The Time Has Come

ZENO 4/1

ZENO 4/1

Adventures In BreezeClan - A Tale Begins

Adventures In BreezeClan - A Tale Begins

Pixl Patches

Pixl Patches

Fairytale Thief: Sleeping Beauty

Fairytale Thief: Sleeping Beauty

ZOZ

ZOZ

Crossing Lines

Crossing Lines

I Can Still Be A Hero

I Can Still Be A Hero

Perfumare DATING GAME

Perfumare DATING GAME

PIXEL CONQUEST

PIXEL CONQUEST

The Last Astronomer

The Last Astronomer

The Last of the Lords of Ice

The Last of the Lords of Ice