Game overview
Boo! - The Mystery Story
Boo! is a 2.5D cartoon-style platformer with shoot 'em up action and hardcore combat. Explore a plant-infested world, collect blaster modules, battle unique bosses, and uncover the city's secrets in a world inspired by vintage animation and hidden dangers.
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About this game Read the full description
Boo! is a 2.5D side-scrolling shoot 'em up platformer set in a vibrant cartoon world… that’s slowly being devoured by a green apocalypse.
This is a dark and mysterious tale about a city under siege by monstrous plants. No one knows where they came from, or why they’re attacking. But when Matt’s best friend Emma is taken during the chaos, his search for her will uncover something far worse than overgrown vines.
You are Matt, a tired plumber caught in the middle of the green apocalypse. Armed with a stolen blaster and his trusty plumber’s plunger, Matt must battle through hordes of mutated plant creatures, survive deadly boss encounters, and uncover the truth behind the outbreak. Along the way, a shadowy figure offers strange upgrades — blaster modules that the player assembles and customizes to match their combat style.
Every encounter brings you closer to a horrifying realization: the plants didn’t rise by accident. Someone is behind it all… and he’s watching you.
Shoot 'em up with deck-building
Your blaster is modular — each component alters its behaviour, from damage type to shot pattern. Combine modules to match your style and adapt to every enemy.
Explore a living, infected world
An open, interwoven world invites deep exploration. Unlock new abilities and return to previously unreachable areas.

Unique Bosses & Enemies
Every boss and enemy is a challenge, with complex mechanics and memorable designs. Expect frustration — and satisfaction — when you finally win.
Hand-drawn cartoon style
Inspired by 1930s–1950s animation: fluid movement, expressive characters, and nostalgic charm hiding real danger.
Features
2.5D platforming with intense shoot 'em up combat
Dozens of unique enemies and tough bosses
Vintage cartoon visuals with a dark twist
No mercy. No shortcuts. Just roots, bullets, and skill
Add to your wishlist if you love cartoon art and hardcore challenge!
Media gallery 13 screenshots · 0 videos
Screenshots
Player activity
Concurrent players over the last 48 hours.
System requirements Windows · macOS
Windows
Minimum
Minimum:- Requires a 64-bit processor and operating system
- OS *: Win 7
- Processor: Quad-core Intel / AMD processor, 2 GHz
- Memory: 4 GB RAM
- Graphics: 1 GB
- DirectX: Version 10
- Storage: 400 MB available space
Recommended
Recommended:- Requires a 64-bit processor and operating system
macOS
Minimum
Minimum:- OS: Big Sur 11 or newer
- Processor: Intel Core i3
- Memory: 4 GB RAM
- Graphics: Metal capable Intel and AMD GPUs
- Storage: 8 GB available space
Recommended
Recommended:- OS: Big Sur 11 or newer
- Processor: Intel Core i5, Apple M1
- Memory: 8 GB RAM
- Graphics: Metal capable Intel and AMD GPUs, Apple M1
- Storage: 8 GB available space
Game details Languages, features & support
- Publisher
- Solvex Games
- Brazilian rating
- l
- Controller support
- full
- Features
- Single-player, Full controller support, Custom Volume Controls, Playable without Timed Input, Steam Cloud, Family Sharing
- Languages
- English, Russian, Spanish - Spain, French, Italian, German
- Website
- Official website ↗
- Support
- [email protected] Support site ↗
Compatibility & accessibility Steam Deck, controllers & access features
Can I Play This?
Steam declarations and Valve's Steam Deck compatibility result. Missing data is shown as unknown, never unsupported.
Developer-declared accessibility on Steam
Features not declared by the developer are not labeled unsupported.
Structured language support (6)
| Language | Interface | Full audio | Subtitles |
|---|---|---|---|
| English | Yes | No | Yes |
| Russian | Yes | No | Yes |
| Spanish - Spain | Yes | No | Yes |
| French | Yes | No | Yes |
| Italian | Yes | No | Yes |
| German | Yes | No | Yes |
More analysis Activity patterns, updates & developer tools
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