Mayhem in Single Valley

A puzzle-platforming adventure about outsmarting monsters in a collapsing town

Fluxscopic Ltd. · Published by tinyBuild · Released May 20, 2021

Reviews: Very Positive; 83% of 192
Recent reviews: Not enough recent
Players: 0; daily peak, Oct 28, 2026
Steam Deck: Playable
Last update on Steam: 5 years ago; Jun 11, 2021
Minimum PC: DX9 (shader model 2.0) ca…; 2 GB RAM · 2 GB disk; Full requirements

What is Mayhem in Single Valley?

This top-down action-adventure follows Jack, a kid who accidentally starts an apocalypse in his town. You evade creatures, exploit their likes and dislikes, and solve environmental puzzles involving poisonous rivers and cloning yourself.

For you if...

+you enjoy comedy and fourth-wall jokes in your adventures
+you like searching for hidden collectibles

Not for you if...

−you want weapon-focused combat rather than distracting enemies

What players say

83% of 192 reviews are positive

Players praise the pixel art and music. Complaints focus on awkward controls, hard-to-judge platform jumps, and collectibles that are easy to miss.

Screenshots and trailer

Mayhem in Single Valley system requirements

Minimum: DX9 (shader model 2.0) ca…, 2 GB RAM, 2 GB of disk space.

As published by the developer.

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Minimum

OS: Windows 7 or newer
Processor: Intel Core 2 Duo 2.4ghz or higher
Graphics: Graphics card: DX9 (shader model 2.0) capabilities; generally everything made since 2004 should work.
Memory: 2 GB RAM
Storage: 2 GB available space
DirectX: Version 9.0
Notes: Works best without squirrels stuck in your machine

Does Mayhem in Single Valley have co-op or multiplayer?

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

Single-player

Does Mayhem in Single Valley run on Steam Deck?

Playable Playable: it runs on Steam Deck with some adjustments.

The native resolution is not the default one
All functionality is accessible with the default controller configuration
Shows Steam Deck controller icons
In-game text is legible on Steam Deck
Default graphics settings perform well on Steam Deck

PC version details

DRM: None declared on Steam
Controller: Full controller support
Platforms: Windows
Achievements: 40
Steam features: Family Sharing
Languages: Text only: English, French, Italian, German, Spanish - Spain, Japanese, Korean, Portuguese - Brazil, Russian, Simplified Chinese.

Does Mayhem in Single Valley 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 27, 2026. How to filter AI games on Steam