# The Murder of Sonic the Hedgehog

> Sega reported over 2 million downloads for its free Sonic murder mystery.

- Owner: SEGA
- Kind: Game
- Sector: Gaming
- Seed date: 2023-03-31
- Peak date: 2023-04-01
- Spread Score: 47 (Notable), v1.2
- Mechanics: Transgression, Platform jump, Press loop, Underdog, Maker origin

## Summary

Sega’s free murder mystery prompted participation beyond playthroughs. SketchyTodd posted game-tagged character art during launch weekend. A later Steam guide linked an unofficial Japanese patch, installation video and feedback hashtag, documenting fan-created access materials.

## Timeline

- 2023-03-31 — @sonic_hedgehog (X) — The official account teased a new direction for Sonic before the game launched.
- 2023-03-31 — SEGA (Open web) — Sega released the free murder mystery game on Steam for Windows and macOS.
- 2023-03-31 — PC Gamer (Press) — PC Gamer reported the release and said its writer had played the game.

The full timeline, metrics and sources are on the case page, or via the Pro API (https://howitspread.com/developers).

Canonical URL: https://howitspread.com/cases/the-murder-of-sonic-the-hedgehog

Cite as: How It Spread (2026). “The Murder of Sonic the Hedgehog.” Case HIS-00988. Spread Score v1.2: 47/100. Updated 2026-10-15. https://howitspread.com/id/HIS-00988