SZ
SZ
SZ
SzGames

Loading Oni...

This may take a few seconds

Oni

4.5 / 5
34,851 plays
adventure Mobile Friendly

Game Information

Developer: SZ Games
Rating:
4.5/5
Released: April 2024
Last Updated: June 2025
Technology: HTML5 (Unity WebGL)
Platform: Browser
Size: ~15 MB
Plays: 34,851
Mobile Support: Yes

Tags

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

About Oni

Strap in for a pulse-pounding, mind-bending journey in Oni, the indie adventure that’s redefining browser gaming. Your story begins on a routine cargo run gone wrong—energy surges cripple your ship, forcing an emergency landing on a mysterious, energy-rich planet. As you step onto the alien surface amid swirling pixels and retro synths, you’re thrust into a high-stakes quest: recover enough planet energy to fuel your desperate escape.

Every inch of Oni oozes tight indie craftsmanship. Navigate hazardous landscapes brimming with environmental puzzles, pulsating hazards, and secret pathways—all wrapped in lush, atmospheric pixel art that pays homage to old-school classics yet feels cutting-edge. The controls are razor-sharp: glide, jump, and double back with flawless precision using either WASD/arrow keys or your favorite mobile gestures. Mastering Oni’s smooth moves and quick reactions is essential, especially with its notorious hard difficulty curve that will challenge even genre veterans.

What truly sets Oni apart is its sense of discovery and reward. Explore sprawling levels packed with hidden lore, cryptic energy relics, and artful easter eggs. Snag the digital art book for deeper immersion, or grab a physical copy if you crave collector’s cred. With zero installs required, Oni’s seamless HTML5 integration lets you jump into action anywhere—work break, couch, or commute.

Whether you’re a speedrunner gunning for perfect completion or a story-driven explorer uncovering every secret, Oni promises hours of edge-of-your-seat gameplay. Each run brings fresh surprises, epic victories, and white-knuckle moments as you fight to reclaim your power and return home. Are you ready to brave the unknown, beat the odds, and become the hero of your own pixelated legend?

How to Play

Start by launching Oni right from your browser—no download needed. Use W, A, S, D or Arrow Keys to move your character across mysterious alien landscapes. To interact or jump, press J or Z (acting as Button A). Use K or X for secondary actions (Button B), such as activating items or fighting off hostile planetary threats. Press Enter to start your game and Shift to make gameplay selections or toggle between menu options.

As you step from your ship, your primary quest is to collect enough planetary energy to recharge your ship. Explore strange, biome-diverse levels with hazards like energy surges, shifting platforms, and aggressive wildlife. Keep your reflexes sharp—timing your jumps and dodges is crucial in this challenging environment!

Beginner tips: Survey each area carefully for hidden alcoves and secret objects, some of which grant extra abilities or environmental clues. Don’t rush—steady, deliberate movement will help you survive tough traps. Use checkpoints wisely as Oni’s challenge level ramps up quickly. Whether you play on desktop or mobile, controls are intuitive and responsive, allowing for precision play in any setting. If you’re ever stuck, revisit earlier areas to unlock new paths with collectibles or power-ups. Good luck, explorer—your ship (and fate) depend on your skills!

Controls

mouse
keyboard

Tips & Tricks

  • Explore every nook—secret alcoves often hide energy boosts and lore-rich items.
  • Master jump timing; late-stage platforms require near-perfect reflexes.
  • Don’t skip tutorial sections—Oni’s mechanics build intricately as you progress.
  • Watch for environmental cues: energy patterns and odd textures can signal hidden paths.
  • Replay completed levels—collectibles may only appear after key story events.
  • Use checkpoints strategically; not all are in obvious locations.
  • Combine A+B actions in tough spots to unleash hidden moves or break environmental objects.

Game Features

  • Hardcore platforming with tight, responsive controls
  • Mobile-compatible HTML5 gameplay—play anywhere, anytime
  • Atmospheric pixel art and retro-inspired sound design
  • Challenging puzzles and richly layered environments
  • Multiple secrets, collectibles, and optional art book for deep lore fans
  • Free to play directly in your browser with no installs needed
  • Physical copies and exclusive digital art book options for collectors

Frequently Asked Questions

Is Oni really free to play online?

Yes! Oni is a completely free indie adventure that runs seamlessly on your browser, with no downloads or hidden fees.

Can I play Oni on my phone or tablet?

Absolutely. Oni is fully mobile compatible—enjoy precise controls whether you're on desktop or your favorite mobile device.

How do I save progress or use checkpoints?

Checkpoints are scattered throughout Oni’s world. Reaching one saves your progress automatically, letting you retry tough sections with less frustration.

What makes Oni’s difficulty level unique?

Oni offers a challenging curve ideal for platformer fans—tight reflexes and creative problem-solving are key, but fair design keeps it fun and rewarding.

Are there collectibles or upgrades in Oni?

Yes! Scour each level for hidden energy relics, special items, and lore entries. Some upgrades and bonuses only unlock after thorough exploration.

Game Info

Rating 4.5/5
Plays 34,851
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]

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

The Story of Sin

The Story of Sin

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