Sigma Impact

A physics-based action roguelite where movement drives your weapon swings

John Bishop · Released Aug 11, 2021

Reviews: Very Positive; 96% of 96
Recent reviews: Not enough recent
Players: 0; daily peak, Oct 28, 2026
Steam Deck: Verified
Last update on Steam: 3 years ago; Jan 8, 2023
Minimum PC: HD 2400; 0.5 GB RAM · 0.1 GB disk; Full requirements

What is Sigma Impact?

This 2D, top-down action roguelite takes place in a glass dungeon. You clear procedurally generated rooms, building momentum to strike enemies and unlocking weapons and perks on the way to the final boss.

For you if...

+you enjoy mastering combat that demands timing and positioning
+you want local cooperative or competitive play

Not for you if...

−you prefer fixed levels over procedurally generated dungeon runs
−you want straightforward attacks without managing weapon momentum

What players say

96% of 96 reviews are positive

Players praise the combat's sense of weight, the distinct weapon abilities, and the music and visual style.

Screenshots and trailer

Sigma Impact system requirements

Minimum: HD 2400, 0.5 GB RAM, 0.1 GB of disk space.

As published by the developer.

Can my PC run Sigma Impact?

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

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Minimum

OS: Windows 7, 8 or 10 x64
Processor: Intel or AMD Dual Core CPU
Graphics: (Integrated): Intel HD Graphics or AMD (formerly ATI) Radeon HD Graphics (Discrete): Nvidia GeForce 9600 GT or AMD Radeon HD 2400
Memory: 512 MB RAM
Storage: 64 MB available space
DirectX: Version 9.0

Does Sigma Impact have co-op or multiplayer?

Yes: co-op split-screen; PvP split-screen. It also has a single-player mode. With Remote Play Together, one copy is enough to play the local modes online with friends.

Does Sigma Impact run on Steam Deck?

Verified Yes, Verified by Valve: it works on Steam Deck out of the box.

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: 16
Steam features: Cloud saves, Family Sharing
Languages: Text only: English.

Does Sigma Impact 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