What Happened

Psychological horror inside a teenager's distorted memories and waking nightmares

What Happened · Published by KATNAPPE SP. Z O. O., Sourena Game Studio · Released Jul 30, 2020

Reviews: Mixed; 59% of 61
Recent reviews: Not enough recent
Players: 0; daily peak, Oct 28, 2026
Steam Deck: Untested
Last update on Steam: 5 years ago; Nov 9, 2020
Minimum PC: GeForce GTX 750 Ti; 8 GB RAM · 17 GB disk; Full requirements

What is What Happened?

This first-person walking simulator follows Stiles, a high school student with anxiety and depression. You navigate corridors in his subconscious, follow environmental clues, and solve puzzles. The empathy you show him influences the outcome.

For you if...

+you like searching for secrets and discovering alternate endings

Not for you if...

−you want action rather than a walking simulator's pace
−you avoid stories involving suicide, bullying, and drug use

What players say

59% of 61 reviews are positive

Players praise the visual design and atmosphere. Complaints focus on frequent cutscenes and confusing or melodramatic storytelling. A more recent reviewer also reports bugs.

Screenshots and trailer

What Happened system requirements

Minimum: GeForce GTX 750 Ti, 8 GB RAM, 17 GB of disk space.

As published by the developer.

Can my PC run What Happened?

Tell us your graphics card once and every game page will answer this for you.

Set up my PC →

Minimum

OS: 64-bit Windows 7, Windows 8.1, Windows 10
Processor: Intel core i3 4160 / AMD Ryzen 3300x
Graphics: GeForce GTX 750 Ti / AMD Radeon R9 270x
Memory: 8 GB RAM
Storage: 17 GB available space
DirectX: Version 11
Notes: Requires a 64-bit processor and operating system

OS: 64-bit Windows 7, Windows 8.1, Windows 10
Processor: Intel Core i5-6500 (3.2 GHz) / AMD Ryzen 5 1600
Graphics: GeForce GTX 1050 Ti / AMD Radeon RX 470
Memory: 8 GB RAM
Storage: 17 GB available space
DirectX: Version 11
Notes: Requires a 64-bit processor and operating system

Does What Happened have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Single-player

Does What Happened run on Steam Deck?

Untested Not yet tested by Valve on Steam Deck.

PC version details

DRM: None declared on Steam
Controller: Full controller support
Platforms: Windows
Achievements: 22
Steam features: Family Sharing
Languages: Full audio: English. Text only: French, German, Spanish - Spain, Japanese, Korean, Polish, Portuguese - Brazil, Russian, Simplified Chinese.

Does What Happened use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 28, 2026. How to filter AI games on Steam