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OPUS: Echo of Starsong

OPUS: Echo of Starsong
Release:
Developer: Sigono
Publisher: Sigono
Genre: Science Fiction
Presentation: 2D or 2.5D
Platform:
  • PC
  • Switch
  • iOS
Perspective: Third-Person
Gameplay: Visual novel
Control: Point-and-click
Theme: Journey, Outer space
Graphic Style: Stylized
Difficulty: Low

OPUS: Prism Peak

OPUS: Prism Peak
Release: Q4 2025
Developer: Sigono
Publisher: Shueisha Games
Genre: Drama
Presentation: Realtime 3D
Platform:
  • PC
  • Mac
Perspective: First-Person
Gameplay: Choices matter, Quest
Control: Direct Control
Theme: Lost, Memories, Photography, Psychological
Graphic Style: Illustrated realism

OPUS: Rocket of Whispers

OPUS: Rocket of Whispers
Release:
Developer: Sigono
Publisher: Sigono
Genre: Science Fiction
Presentation: 2D or 2.5D
Platform:
  • PC
  • Switch
  • iOS
  • Android
Perspective: Third-Person
Gameplay: Visual novel
Control: Point-and-click
Game Length: Short (1-5 hours)
Theme: Journey, Repair
Graphic Style: Stylized
Difficulty: Low

OPUS: The Day We Found Earth

OPUS: The Day We Found Earth
Release:
Developer: Sigono
Publisher: Sigono
Genre: Science Fiction
Presentation: 2D or 2.5D
Platform:
  • PC
  • Switch
  • iOS
  • Android
Perspective: Third-Person
Gameplay: Puzzle, Visual novel
Control: Point-and-click
Game Length: Short (1-5 hours)
Theme: Journey, Outer space
Graphic Style: Illustrated realism
Difficulty: Low

Orbital Cargo Division

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Orbital Cargo Division
Release:
Developer: Manuel Schenk
Publisher: Manuel Schenk
Genre: Comedy, Mystery, Science Fiction
Presentation: 2D or 2.5D
Platform:
  • PC
  • Switch
  • Mac
Perspective: Third-Person
Gameplay: Puzzle, Quest
Control: Point-and-click
Game Length: Short (1-5 hours)
Theme: Futuristic, Outer space
Graphic Style: Pixel art
Difficulty: Low

Orson, P.I.: Midnight at the Grand Hotel

Orson, P.I.: Midnight at the Grand Hotel
Release: 2026
Developer: Abscure Games
Publisher: Abscure Games
Genre: Mystery
Presentation: 2D or 2.5D
Platform:
  • PC
Perspective: Third-Person
Gameplay: Deduction, Investigative
Control: Point-and-click
Theme: Animal, Crime solving
Graphic Style: Simulated realism

Orten Was the Case

82
Orten Was the Case
Release:
Developer: Woodhill Interactive
Publisher: Woodhill Interactive
Genre: Science Fiction
Presentation: 2D or 2.5D
Platform:
  • PC
  • PlayStation 4
  • PlayStation 5
  • Switch
  • Xbox One
  • Xbox Series X|S
  • Mac
Perspective: Third-Person
Gameplay: Puzzle, Survival
Control: Direct Control
Game Length: Long (more than 10 hours)
Action: Combat, Platforming
Theme: Savior, Time travel
Graphic Style: Stylized

Ortunia Mysteries: Where Did Everybody Go?

Ortunia Mysteries: Where Did Everybody Go?
Release:
Developer: Mr Jazz Entertainment
Publisher: Mr Jazz Entertainment
Genre: Mystery
Presentation: Realtime 3D
Platform:
  • PC
Perspective: First-Person
Gameplay: Puzzle, Quest
Control: Direct Control
Theme: Missing persons
Graphic Style: Simulated realism

Other Side of Mist and Mountain

Other Side of Mist and Mountain
Release:
Developer: Universe Studio
Publisher: 2P Games
Genre: Horror, Mystery
Presentation: 2D or 2.5D, Side-scroller
Platform:
  • PC
Perspective: Third-Person
Gameplay: Visual novel
Control: Point-and-click
Theme: Monsters, Paranormal
Graphic Style: Illustrated realism
Difficulty: Low

OU

81
OU
Release:
Developer: room6, G-MODE
Publisher: yokaze, G-MODE
Genre: Fantasy
Presentation: 2D or 2.5D, Side-scroller
Platform:
  • PC
  • Switch
  • Steam Deck
Perspective: Third-Person
Gameplay: Puzzle, Quest
Control: Point-and-click
Theme: Cultural, Surreal
Graphic Style: Stylized

Out of Sight

Out of Sight
Release:
Developer: The Gang
Publisher: Starbreeze Studios
Genre: Horror
Presentation: Realtime 3D
Platform:
  • PC
  • PlayStation 5
  • Switch
  • Switch 2
  • Xbox Series X|S
  • Steam Deck
  • PC VR
Perspective: Second-Person
Gameplay: Puzzle-platformer, Stealth
Control: Direct Control
Theme: Childhood, Escape, Paranormal, Team-up
Graphic Style: Simulated realism

Outer Wilds

Outer Wilds
Release:
Developer: Mobius Digital
Publisher: Annapurna Interactive
Genre: Science Fiction
Presentation: Realtime 3D
Platform:
  • PC
  • PlayStation 4
  • PlayStation 5
  • Switch
  • Xbox One
  • Xbox Series X|S
  • Steam Deck
Perspective: First-Person
Gameplay: Exploration, Puzzle
Theme: Outer space, Time travel
Graphic Style: Simulated realism

Outer Wilds: Echoes of the Eye (DLC)

Outer Wilds: Echoes of the Eye (DLC)
Release:
Developer: Mobius Digital
Publisher: Annapurna Interactive
Genre: Science Fiction
Presentation: Realtime 3D
Platform:
  • PC
  • PlayStation 4
  • PlayStation 5
  • Switch
  • Xbox One
  • Xbox Series X|S
  • Steam Deck
Perspective: First-Person
Gameplay: Exploration, Puzzle
Control: Direct Control
Theme: Outer space
Graphic Style: Simulated realism

Outlying Islands

Outlying Islands
Release:
Developer: 九指画尸, 线娘
Publisher: 2P Games
Genre: Horror
Presentation: 2D or 2.5D, Side-scroller
Platform:
  • PC
Perspective: Third-Person
Gameplay: Exploration, Puzzle
Control: Point-and-click
Theme: Escape, Monsters
Graphic Style: Stylized

Overmorrow

Overmorrow
Release:
Developer: PixelManta
Publisher: PixelManta
Genre: Adventure
Presentation: Overhead
Platform:
  • PC
  • Steam Deck
Perspective: Third-Person
Graphic Style: Pixel art